List of companion plants - AbsoluteAstronomy.com

This is a list of companion plant relationships. Many more are in the list of beneficial weeds.

The purpose of this list is to provide plants that assist in the growth of others, be it attracting beneficial insects

Beneficial insects

Beneficial insects are any of a number of species of insects that perform valued services like pollination and pest control. The concept of beneficial is subjective and only arises in light of desired outcomes from a human perspective...

, naturally regulating pests, repelling harmful insects, providing nutrients, part of a biological pest control

Biological pest control

Biological control of pests in agriculture is a method of controlling pests that relies on predation, parasitism, herbivory, or other natural mechanisms...

program, and in some cases simply a shaded microclimate or climbing support.

Vegetables

Vegetables
Common name	Scientific name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments
Allium Allium Allium is a monocot genus of flowering plants, informally referred to as the onion genus. The generic name Allium is the Latin word for garlic.... s	Allium	fruit trees, nightshades (tomatoes, peppers, potatoes), brassicas (cabbage, broccoli, kohlrabi, etc) carrots	carrots		slugs, aphids, carrot fly Carrot fly The carrot fly is a pest of gardens and farms, and mainly affects the crop of carrots, but can also attack parsnips, parsley and celery.It is a member of the family Psilidae .-Larvae:... , cabbage worms	beans, peas, parsley	Alliums include onions, garlic, leeks, shallots, chives, and others
Asparagus Asparagus Asparagus officinalis is a spring vegetable, a flowering perennialplant species in the genus Asparagus. It was once classified in the lily family, like its Allium cousins, onions and garlic, but the Liliaceae have been split and the onion-like plants are now in the family Amaryllidaceae and...	Asparagus officinalis	Tomatoes	Aster Family flowers, Dill, Coriander, Tomatoes, Parsley, Basil, Comfrey, Marigolds			Onion, Garlic, Potatoes	Marigolds will deter beetles.
Brassica Brassica Brassica is a genus of plants in the mustard family . The members of the genus may be collectively known either as cabbages, or as mustards... s	Brassica		geraniums, dill, alliums (onions, shallots, garlic, etc), rosemary, nasturtium, borage			mustards, nightshades (tomatoes, peppers, etc)	Brassicas are a family of species which include broccoli, cabbage, brussels sprouts, kohlrabi, and cauliflower.
Bean Bean Bean is a common name for large plant seeds of several genera of the family Fabaceae used for human food or animal feed.... s,	Phaseolus Phaseolus Phaseolus is a genus in the family Fabaceae of about fifty plant species, all native to the Americas.At least four of the species have been domesticated since pre-Columbian times for their beans. Most prominent among these is the common bean, P...	Corn (see Three Sisters Three Sisters (agriculture) The Three Sisters are the three main agricultural crops of various Native American groups in North America: squash, maize, and climbing beans .... ), Spinach, lettuce, rosemary, summer savory, dill, carrots, brassicas, beets, radish, strawberry and cucumbers	Eggplant, Summer savory		California beetles	Tomatoes, chili peppers, alliums (onions, garlic, etc), kales (cabbage, broccoli, etc)	Hosts nitrogen-fixing bacteria, a good fertilizer for some plants, too much for others
Beet Beet The beet is a plant in the Chenopodiaceae family which is now included in Amaranthaceae family. It is best known in its numerous cultivated varieties, the most well known of which is the purple root vegetable known as the beetroot or garden beet... s,	Beta Vulgaris	lettuce, kohlrabi, onions and brassicas	Catnip, Garlic, Mint			Runner or pole beans	Good for adding minerals to the soil through composting leaves which have up to 25% magnesium. Runner or pole beans and beets stunt each other's growth.
Broccoli Broccoli Broccoli is a plant in the cabbage family, whose large flower head is used as a vegetable.-General:The word broccoli, from the Italian plural of , refers to "the flowering top of a cabbage"....	Brassica oleracea Brassica oleracea Brassica oleracea, or wild cabbage, is a species of Brassica native to coastal southern and western Europe, where its tolerance of salt and lime and its intolerance of competition from other plants typically restrict its natural occurrence to limestone sea cliffs, like the chalk cliffs on both...		geraniums, dill, alliums, rosemary, nasturtium, borage			mustards, Tomatoes, peppers	Rosemary repels cabbage fly, geraniums trap cabbage worms, same general companion profile as all brassica (cabbage, kohlrabi, brussels sprouts, cauliflower, etc)
Cabbage Cabbage Cabbage is a popular cultivar of the species Brassica oleracea Linne of the Family Brassicaceae and is a leafy green vegetable...	Brassica oleracea Brassica oleracea Brassica oleracea, or wild cabbage, is a species of Brassica native to coastal southern and western Europe, where its tolerance of salt and lime and its intolerance of competition from other plants typically restrict its natural occurrence to limestone sea cliffs, like the chalk cliffs on both...		geraniums, dill, alliums, rosemary			mustards, Tomatoes, peppers strawberries, and pole/runner beans	Rosemary repels cabbage flies, geraniums trap cabbage worms, same general companion profile as all brassica (cabbage, kohlrabi, brussels sprouts, cauliflower, etc)
Carrot Carrot The carrot is a root vegetable, usually orange in colour, though purple, red, white, and yellow varieties exist. It has a crisp texture when fresh... s	Daucus carota Wild carrot Daucus carota is a flowering plant in the family Apiaceae, native to temperate regions of Europe, southwest Asia and naturalised to northeast North America and Australia; domesticated carrots are cultivars of a subspecies, Daucus carota subsp...	Tomatoes, Alliums (onions, chives, etc), lettuce	alliums (leeks, shallots, etc), rosemary, wormwood, sage, beans, flax Flax Flax is a member of the genus Linum in the family Linaceae. It is native to the region extending from the eastern Mediterranean to India and was probably first domesticated in the Fertile Crescent...	assassin bug, lacewing, parasitic wasp, yellow jacket and other predatory wasps		Dill, parsnip, radish	Tomatoes grow better with carrots, but may stunt the carrots' growth. Beans (which are bad for tomatoes) provide the nitrogen carrots need more than some other vegetables. Aromatic companion plants repel carrot fly Carrot fly The carrot fly is a pest of gardens and farms, and mainly affects the crop of carrots, but can also attack parsnips, parsley and celery.It is a member of the family Psilidae .-Larvae:... . Sage, rosemary, and radishes are recommended by some as companion plants, but listed by others as incompatible. Alliums inter-planted with carrots confuse onion and carrot flies. For the beneficial insect-attracting properties of carrots to work, they need to be allowed to flower; Otherwise, use the wild carrot, Queen Anne's Lace, for the same effect. Flax produces an oil that may protect root vegetables like carrots from some pests.
Celery Celery Apium graveolens is a plant species in the family Apiaceae commonly known as celery or celeriac , depending on whether the petioles or roots are eaten: celery refers to the former and celeriac to the latter. Apium graveolens grows to 1 m tall... ,	Apium graveolens		Cosmos, Daisies, Snapdragons			corn, Aster flowers, these can transmit the aster yellows disease
Corn Maize Maize known in many English-speaking countries as corn or mielie/mealie, is a grain domesticated by indigenous peoples in Mesoamerica in prehistoric times. The leafy stalk produces ears which contain seeds called kernels. Though technically a grain, maize kernels are used in cooking as a vegetable... / Maize	Zea mays	beans	Sunflowers, legumes (beans, peas, soybeans etc), peanuts, cucurbits (squash, cucumbers, melons, etc), amaranth, white geranium, lamb's quarters, morning glory, parsley, and potato			Tomato, Celery	Provides beans with a trellis, is protected from predators and dryness by cucurbits, in the three sisters Three Sisters (agriculture) The Three Sisters are the three main agricultural crops of various Native American groups in North America: squash, maize, and climbing beans .... technique
Cucumber Cucumber The cucumber is a widely cultivated plant in the gourd family Cucurbitaceae, which includes squash, and in the same genus as the muskmelon. The plant is a creeping vine which bears cylindrical edible fruit when ripe. There are three main varieties of cucumber: "slicing", "pickling", and...	Cucumis Sativus		Nasturtiums, radishes, marigolds, sunflowers, peas, beets, carrots, and Dill	Beneficial for ground beetles		Tomato, Sage
Common name	Scientific name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments
Eggplant or Aubergine Aubergine The eggplant, aubergine, melongene, brinjal or guinea squash is a plant of the family Solanaceae and genus Solanum. It bears a fruit of the same name, commonly used in cooking...	Solanum melongena	Beans, Peppers	Marigolds, tarragon Tarragon Tarragon or dragon's-wort is a perennial herb in the family Asteraceae related to wormwood. Corresponding to its species name, a common term for the plant is "dragon herb". It is native to a wide area of the Northern Hemisphere from easternmost Europe across central and eastern Asia to India,... , mints				Marigolds will deter nematodes.
Leek Leek The leek, Allium ampeloprasum var. porrum , also sometimes known as Allium porrum, is a vegetable which belongs, along with the onion and garlic, to family Amaryllidaceae, subfamily Allioideae...	Allium ampeloprasum v. porrum Leek The leek, Allium ampeloprasum var. porrum , also sometimes known as Allium porrum, is a vegetable which belongs, along with the onion and garlic, to family Amaryllidaceae, subfamily Allioideae...	Celery, apple trees	carrots		cabbage worms, aphids, carrot fly Carrot fly The carrot fly is a pest of gardens and farms, and mainly affects the crop of carrots, but can also attack parsnips, parsley and celery.It is a member of the family Psilidae .-Larvae:... , others	Legumes (beans, peas, etc), swiss chard	Same companion traits as all alliums (onions, garlic, shallots, chives, etc)
Lettuce Lettuce Lettuce is a temperate annual or biennial plant of the daisy family Asteraceae. It is most often grown as a leaf vegetable. It is eaten either raw, notably in salads, sandwiches, hamburgers, tacos, and many other dishes, or cooked, as in Chinese cuisine in which the stem becomes just as important...	Lactuca sativa		Radish, Kohlrabi, beans, carrots			celery, cabbage, cress, parsley	Mints (including hyssop, sage, and various "balms") repel slugs, a bane of lettuce and cabbages
Mustard Mustard plant Mustards are several plant species in the genera Brassica and Sinapis whose small mustard seeds are used as a spice and, by grinding and mixing them with water, vinegar or other liquids, are turned into the condiment known as mustard or prepared mustard...	Brassicaceae, Sinapis alba	Cabbage, cauliflower, radish, brussels sprouts, turnips			various pests		Same general companion profile as all brassica (cabbage, kohlrabi, brussels sprouts, cauliflower, etc)
Nightshades	Solanaceae Solanaceae Solanaceae are a family of flowering plants that include a number of important agricultural crops as well as many toxic plants. The name of the family comes from the Latin Solanum "the nightshade plant", but the further etymology of that word is unclear...		carrots, alliums, mints (basil, oregano, etc)			beans, black walnuts, corn, fennel, dill, brassica (broccoli, cabbage, cauliflower, etc)	Nightshade plants include tomatoes, tobacco, chili peppers (including bell peppers), potatoes, eggplant, and others
Common name	Scientific name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments
Onion Onion The onion , also known as the bulb onion, common onion and garden onion, is the most widely cultivated species of the genus Allium. The genus Allium also contains a number of other species variously referred to as onions and cultivated for food, such as the Japanese bunching onion The onion...	Allium cepa	Tomatoes, Kales (broccoli, cabbage, etc)	Carrots		aphids, carrot fly Carrot fly The carrot fly is a pest of gardens and farms, and mainly affects the crop of carrots, but can also attack parsnips, parsley and celery.It is a member of the family Psilidae .-Larvae:... , other pests	Beans, lentils, peas, parsley	Same companion traits as all other alliums (chives, garlic, shallots, leeks, etc)
Pepper Chili pepper Chili pepper is the fruit of plants from the genus Capsicum, members of the nightshade family, Solanaceae. The term in British English and in Australia, New Zealand, India, Malaysia and other Asian countries is just chilli without pepper.Chili peppers originated in the Americas... s	Solanaceae, Capsicum Capsicum Capsicum is a genus of flowering plants in the nightshade family, Solanaceae. Its species are native to the Americas where they have been cultivated for thousands of years, but they are now also cultivated worldwide, used as spices, vegetables, and medicines - and have become are a key element in...	themselves, marjoram	tomatoes, geraniums, petunias			beans, kale (cabbage, brussels sprouts, etc)	Pepper plants like high humidity, which can be helped along by planting with some kind of dense-leaf or ground-cover companion, like marjoram and basil; they also need direct sunlight, but their fruit can be harmed by it...pepper plants grown together, or with tomatoes, can shelter the fruit from sunlight, and raises the humidity level.
Potato Potato The potato is a starchy, tuberous crop from the perennial Solanum tuberosum of the Solanaceae family . The word potato may refer to the plant itself as well as the edible tuber. In the region of the Andes, there are some other closely related cultivated potato species...	Solanum tuberosum		Horseradish			Atriplex, carrot, cucumber, oignon, raspberries, squash, sunflower, tomato	Horseradish increases the disease resistance of potatoes
Parsnip Parsnip The parsnip is a root vegetable related to the carrot. Parsnips resemble carrots, but are paler than most carrots and have a sweeter taste, especially when cooked. The buttery, slightly spicy, sweet flavor of cooked mature parsnips is reminiscent of butterscotch, honey, and subtle cardamom...	Pastinaca Sativa	fruit trees		a variety of predatory insects			The flowers of the parsnip plant left to seed will attract a variety of predatory insects to the garden, they are particularly helpful when left under fruit trees, the predators attacking codling moth and light brown apple moth. The root also contains Myristricin, which is toxic to fuit flies, house flies, red spider mite, pea aphids, an simple blender made extraction of three blended parsnips roots to one litre of water through a food processor (not one for preparing food) and left overnight, strained and use within a few days.
Pumpkin Pumpkin A pumpkin is a gourd-like squash of the genus Cucurbita and the family Cucurbitaceae . It commonly refers to cultivars of any one of the species Cucurbita pepo, Cucurbita mixta, Cucurbita maxima, and Cucurbita moschata, and is native to North America... Squash	Curcurbita spp	corn, beans	Buckwheat, catnip, tansy, radishes	Spiders, Ground Beetles			Flea Beetles are warded off by radishes, Curcurbita can be used in the three sisters Three Sisters (agriculture) The Three Sisters are the three main agricultural crops of various Native American groups in North America: squash, maize, and climbing beans .... technique
Spinach Spinach Spinach is an edible flowering plant in the family of Amaranthaceae. It is native to central and southwestern Asia. It is an annual plant , which grows to a height of up to 30 cm. Spinach may survive over winter in temperate regions...	Spinacia oleracea		Peas, Beans				The peas and beans provide natural shade for the spinach
Tomato Tomato The word "tomato" may refer to the plant or the edible, typically red, fruit which it bears. Originating in South America, the tomato was spread around the world following the Spanish colonization of the Americas, and its many varieties are now widely grown, often in greenhouses in cooler... es	Solanum lycopersicum	roses, peppers, asparagus	basil, oregano, parsley, carrots, marigold, Alliums, celery, Geraniums, Petunias, Nasturtium, Borage, any type of onion or chives		asparagus beetle	Black walnut, corn, fennel, peas, dill, potatoes, beetroot, brassicas (kohlrabi, cabbage, etc), rosemary	Black walnut Black Walnut Juglans nigra, the Eastern Black walnut, is a species of flowering tree in the hickory family, Juglandaceae, that is native to eastern North America. It grows mostly in riparian zones, from southern Ontario, west to southeast South Dakota, south to Georgia, northern Florida and southwest to central... s inhibit tomato growth, in fact they are allelopathic to all other nightshade plants (chili pepper, potato, tobacco, petunia) as well, because it produces a chemical called juglone Juglone Juglone, also called 5-hydroxy-1,4-naphthalenedione or 5-hydroxynaphthoquinone, is an organic compound with the molecular formula C10H6O3. In the food industry, juglone is also known as C.I. Natural Brown 7 and C.I. 75500... . Dill attracts tomato horn worm.

Herbs

Herbs
Common name	Scientific name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments
Basil Basil Basil, or Sweet Basil, is a common name for the culinary herb Ocimum basilicum , of the family Lamiaceae , sometimes known as Saint Joseph's Wort in some English-speaking countries....	Ocimum basilicum	tomato, peppers, oregano, asparagus, petunias	chamomile, anise	butterflies	asparagus beetle, mosquitoes, thrips and flies	common rue	is said to make tomatoes taste better, chamomile and anise are supposed to increase the essential oils in many herbs like basil
Borage Borage Borage, , also known as a starflower, is an annual herb originating in Syria, but naturalized throughout the Mediterranean region, as well as Asia Minor, Europe, North Africa, and South America. It grows to a height of , and is bristly or hairy all over the stems and leaves; the leaves are...	Borago officinalis	Almost everything, especially strawberry, cucurbits (cucumber, gourds), tomatoes and cabbage		Predatory insects, honeybees	many pests		Predict a square meter for its adult size. Borage is the magic bullet of companion plants
Caraway Caraway Caraway also known as meridian fennel, or Persian cumin is a biennial plant in the family Apiaceae, native to western Asia, Europe and Northern Africa....	Carum carvi	Strawberries		Parasitic wasps, parasitic flies
Chamomile German Chamomile Matricaria chamomilla or German chamomile, also spelled camomile, is an annual plant of the composite family Asteraceae. Synonyms are: Chamomilla chamomilla, Chamomilla recutita , Matricaria recutita, and Matricaria suaveolens.-Distribution:It usually grows near populated areas all over Europe and...	Matricaria recutita	Basil, Wheat, Onion, Cabbage, Cucumber		Hoverflies, wasps		Growing near herbs will increase their oil production.
Chervil Chervil Chervil is a delicate annual herb related to parsley. Sometimes called garden chervil, it is used to season mild-flavoured dishes and is a constituent of the French herb mixture fines herbes.-Biology:...	Anthriscus cerefolium	Radish, lettuce, broccoli			aphids	radish	loves shade, fortunately it grows well with shade-tolerant food plants; will make radishes grown near it taste spicier
Cilantro / Coriander	Coriandrum sativum	spinach	beans, peas	tachinid fly	aphids, spider mites, white flies and potato beetle
Chives	Allium schoenoprasum	Apples, carrots, tomatoes, brassica (broccoli, cabbage, mustard, etc), many others	carrots		cabbage worms, carrot fly Carrot fly The carrot fly is a pest of gardens and farms, and mainly affects the crop of carrots, but can also attack parsnips, parsley and celery.It is a member of the family Psilidae .-Larvae:... , aphids	beans, peas	Same companion traits as all alliums (onions, garlic, shallots, leeks, etc)said to prevent apple scab after 3 years planting at base of apple trees
Common name	Scientific name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments
Dill Dill Dill is a perennial herb. It is the sole species of the genus Anethum, though classified by some botanists in a related genus as Peucedanum graveolens C.B.Clarke.-Growth:...	Anethum graveolens	Cabbages Brassica oleracea Brassica oleracea, or wild cabbage, is a species of Brassica native to coastal southern and western Europe, where its tolerance of salt and lime and its intolerance of competition from other plants typically restrict its natural occurrence to limestone sea cliffs, like the chalk cliffs on both... , Corn, Lettuce, Onions, Cucumbers		Tiger Swallowtail butterflies/caterpillars, Hoverflies, Wasps, Tomato Horn Worms, honeybees, Ichneumonid Wasps	Aphids, spider mites, squash bugs, cabbage looper	carrots, tomatoes	one of the few plants said to grow with fennel
Fennel Fennel Fennel is a plant species in the genus Foeniculum . It is a member of the family Apiaceae . It is a hardy, perennial, umbelliferous herb, with yellow flowers and feathery leaves...	Foeniculum vulgare	Dill	Dill	ladybugs, syrphid fly, tachinid fly	aphids	Almost everything	Fennel is allelopathic to most garden plants, inhibiting growth, causing to bolt, or actually killing many plants
Garlic Garlic Allium sativum, commonly known as garlic, is a species in the onion genus, Allium. Its close relatives include the onion, shallot, leek, chive, and rakkyo. Dating back over 6,000 years, garlic is native to central Asia, and has long been a staple in the Mediterranean region, as well as a frequent...	Allium sativum	Apple trees, Pear trees, Roses, Cucumbers, Lettuce, Celery			Aphids, cabbage looper, ants, rabbits, cabbage maggot	Beans, cabbages, peas	Deters rabbits, same companion traits as all alliums (onions, chives, shallots, leeks, etc)
Hemp Hemp Hemp is mostly used as a name for low tetrahydrocannabinol strains of the plant Cannabis sativa, of fiber and/or oilseed varieties. In modern times, hemp has been used for industrial purposes including paper, textiles, biodegradable plastics, construction, health food and fuel with modest...	Cannabis sativa L. subsp. sativa	Brassica (cabbage, brussels sprouts, other kales)					Repels many types of beetles which attack cabbages.
Hyssop Hyssop Hyssop is a genus of about 10-12 species of herbaceous or semi-woody plants in the family Lamiaceae, native from the east Mediterranean to central Asia. They are aromatic, with erect branched stems up to 60 cm long covered with fine hairs at the tips. The leaves are narrow oblong, 2–5 cm...	Hyssopus officinalis	Cabbage, grapes		honeybees, butterflies	Cabbage moth larvae, Cabbage Butterflies Large White The Large White , also called Cabbage Butterfly, Cabbage White, or in India the Large Cabbage White, White cabbage butterfly is a butterfly in the family Pieridae.-Distribution:...		Stimulates growth of grapes.
Lovage Lovage Lovage is a tall perennial plant, the sole species in the genus Levisticum, in the family Apiaceae, subfamily Apioideae, tribe Apieae.-Distribution:...	Levisticum officinale	Almost all plants	beans	Ichneumonid Wasps, ground beetles (good)		rhubarb	Is thought to improve the health of almost all plants, like borage and geraniums, is considered a "magic bullet" of companion planting
Oregano Oregano Oregano – scientifically named Origanum vulgare by Carolus Linnaeus – is a common species of Origanum, a genus of the mint family . It is native to warm-temperate western and southwestern Eurasia and the Mediterranean region.Oregano is a perennial herb, growing from 20–80 cm tall,...	Origanum vulgare	Tomatoes, peppers, many other plants	basil		aphids		provides ground cover and much-needed humidity for pepper plants if allowed to spread among them
Common name	Scientific name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments
Peppermint Peppermint Peppermint is a hybrid mint, a cross between the watermint and spearmint . The plant, indigenous to Europe, is now widespread in cultivation throughout all regions of the world...	Mentha piperita	Brassica (cabbage, kholrabi, broccoli, and the other kales)			cabbage fly, ants, cabbage looper		Repels cabbage flies, has same general companion properties as other mints
Rosemary Rosemary Rosemary, , is a woody, perennial herb with fragrant, evergreen, needle-like leaves and white, pink, purple or blue flowers, native to the Mediterranean region. It is a member of the mint family Lamiaceae, which includes many other herbs, and is one of two species in the genus Rosmarinus...	Rosmarinus officinalis	sage Common sage Salvia officinalis is a small, perennial, evergreen subshrub, with woody stems, grayish leaves, and blue to purplish flowers. It is a member of the family Lamiaceae and is native to the Mediterranean region, though it has naturalized in many places throughout the world... , cabbage, beans, carrots			bean beetle	basil	Deters cabbage flies, repels many bean parasites
Sage Common sage Salvia officinalis is a small, perennial, evergreen subshrub, with woody stems, grayish leaves, and blue to purplish flowers. It is a member of the family Lamiaceae and is native to the Mediterranean region, though it has naturalized in many places throughout the world...	Salvia officinalis	rosemary Rosemary Rosemary, , is a woody, perennial herb with fragrant, evergreen, needle-like leaves and white, pink, purple or blue flowers, native to the Mediterranean region. It is a member of the mint family Lamiaceae, which includes many other herbs, and is one of two species in the genus Rosmarinus... , cabbage, beans, carrots		honeybees, cabbage butterfly Large White The Large White , also called Cabbage Butterfly, Cabbage White, or in India the Large Cabbage White, White cabbage butterfly is a butterfly in the family Pieridae.-Distribution:...	cabbage flies, carrot fly Carrot fly The carrot fly is a pest of gardens and farms, and mainly affects the crop of carrots, but can also attack parsnips, parsley and celery.It is a member of the family Psilidae .-Larvae:... , black flea beetle, cabbage looper, cabbage maggot		Deters cabbage flies, repels many bean parasites
Southernwood Southernwood Southernwood is a flowering plant. Found in Europe, the genus Artemisia was named for the goddess Artemis. Southernwood is known by many other names including Old Man, Boy's Love, Oldman Wormwood, Lover's Plant, Appleringie, Garderobe, Our Lord's Wood, Maid's Ruin, Garden Sagebrush, European Sage,...	Artemisia abrotanum	Fruit trees					Controls cabbage moths and malaria mosquitoes.
Spearmint Spearmint Mentha spicata syn. M. cordifolia is a species of mint native to much of Europe and southwest Asia, though its exact natural range is uncertain due to extensive early cultivation. It grows in wet soils...	Mentha spicata				ants, aphids		Controls ants and aphids, has same general companion properties as other mints.
Summer Savoury Savory (herb) Satureja is a genus of aromatic plants of the family Lamiaceae, related to rosemary and thyme. There are about 30 species called savories, of which Summer savory and Winter savory are the most important in cultivation.-Description:...	Satureja hortensis	Green beans, onions,					also delays germination of certain foul herbs
Tansy Tansy Tansy is a perennial, herbaceous flowering plant of the aster family, native to temperate Europe and Asia. It has been introduced to other parts of the world and in some areas has become invasive...	Tanacetum vulgare	beans, cucurbits (cucumbers, squash, etc), corn, roses		honeybees	flying insects(Ichneumonid Wasps), Japanese beetles, striped cucumber beetles, squash bugs and ants		Is reputed to generally repel insects (except for nectar-eating types). This herb should not be consumed, as it is quite toxic.
Tarragon Tarragon Tarragon or dragon's-wort is a perennial herb in the family Asteraceae related to wormwood. Corresponding to its species name, a common term for the plant is "dragon herb". It is native to a wide area of the Northern Hemisphere from easternmost Europe across central and eastern Asia to India,...	Artemisia dracunculus	Everything, but especially eggplant					Its scent is disliked by most pests, and this plant is also thought to have Nurse Plant properties, enhancing the growth and flavor of crops grown with it.
Thyme Thyme Thyme is a culinary and medicinal herb of the genus Thymus.-History:Ancient Egyptians used thyme for embalming. The ancient Greeks used it in their baths and burnt it as incense in their temples, believing it was a source of courage...		Cabbage and broccoli					Deters white fly

Flowers

Flowers
Common Name	Latin Name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments

Geraniums Pelargonium Pelargonium is a genus of flowering plants which includes about 200 species of perennials, succulents, and shrubs, commonly known as scented geraniums or storksbills. Confusingly, Geranium is the correct botanical name of a separate genus of related plants often called Cranesbills. Both Geranium...	Pelargonium spp.	Roses, corn, tomatoes, peppers, grapes			leafhoppers, Japanese beetles		A trap crop Trap crop A trap crop is a plant that attracts agricultural pests, usually insects, away from nearby crops. This form of companion planting can save the main crop from decimation by pests without the potential issues and controversy involved in using pesticides.... , attracting pests away from rose Rose A rose is a woody perennial of the genus Rosa, within the family Rosaceae. There are over 100 species. They form a group of erect shrubs, and climbing or trailing plants, with stems that are often armed with sharp prickles. Flowers are large and showy, in colours ranging from white through yellows... s and grape vines, distracts beet leafhoppers, carrier of the curly top virus, keep away from Solanaceous Solanaceae Solanaceae are a family of flowering plants that include a number of important agricultural crops as well as many toxic plants. The name of the family comes from the Latin Solanum "the nightshade plant", but the further etymology of that word is unclear... plants like eggplant, and tobacco
Lupin Lupin Lupinus, commonly known as Lupins or lupines , is a genus in the legume family . The genus comprises about 280 species , with major centers of diversity in South and western North America , and the Andes and secondary centers in the Mediterranean region and Africa Lupinus, commonly known as Lupins...	Lupinus	Cucurbits, brassica, lettuce, rosemary, dill, strawberry	summer savory	Honeybees		tomatoes and other solanicae	This wildflower is actually a legume, hosting bacteria that fixes nitrogen in the soil, fertilizing it for neighboring plants
Marigold Tagetes Tagetes is a genus of 56 species of annual and perennial mostly herbaceous plants in the sunflower family . The genus is native to North and South America, but some species have become naturalized around the world. One species, T...	Asteraceae Asteraceae The Asteraceae or Compositae , is an exceedingly large and widespread family of vascular plants. The group has more than 22,750 currently accepted species, spread across 1620 genera and 12 subfamilies... Calendula Calendula Calendula , pot marigold, is a genus of about 12–20 species of annual or perennial herbaceous plants in the daisy family Asteraceae, native to the area from Macaronesia east through the Mediterranean region to Iran... Tagetes Tagetes Tagetes is a genus of 56 species of annual and perennial mostly herbaceous plants in the sunflower family . The genus is native to North and South America, but some species have become naturalized around the world. One species, T...	most plants, especially tomatoes and peppers, cucurbits (cucumbers, gourds, squash), brassicas (broccoli, kale, cabbage)			nematodes, beet leaf hoppers, other pests		Marigolds are a wonder-drug of the companion plant world, invoking the saying "plant them everywhere in your garden". French marigolds produce a pesticidal chemical from their roots, so strong it lasts years after they are gone. Mexican marigolds do the same, but are so strong they will inhibit the growth of some more tender herbs. Certain Varieties of marigolds (Tagetes Tagetes Tagetes is a genus of 56 species of annual and perennial mostly herbaceous plants in the sunflower family . The genus is native to North and South America, but some species have become naturalized around the world. One species, T... ) can help manage eelworms (Root-knot nematode Root-knot nematode Root-knot nematodes are plant-parasitic nematodes from the genus Meloidogyne. They exist in soil in areas with hot climates or short winters. About 2000 plants are susceptible to infection by root-knot nematodes and they cause approximately 5% of global crop loss... ) when planted the year before http://www.agr.state.nc.us/AGRONOMI/nnote1.htm. Tagetes has also been found effective against perennial weeds such as Ranunculus ficaria (Celandine), Aegopodium podagraria (Ground elder), Glechoma hederacea (Ground ivy), Agropyron repens (Couch grass), Convolvulus arvensis (Field bindweed), Equisetum arvense (Field/Common Horsetail) and other 'starchy' weeds.
Petunia Petunia Petunia is a widely cultivated genus of flowering plants of South American origin, closely related with tobacco, cape gooseberries, tomatoes, deadly nightshades, potatoes and chili peppers; in the family Solanaceae. The popular flower derived its name from French, which took the word petun, meaning...	Petunia x hybrida	cucurbits (squash, pumpkins, cucumbers), asparagus			leafhoppers, Japanese beetles, aphids, asparagus beetle		Is a trap crop almost identical to geraniums in function
Nasturtium Nasturtium Tropaeolum , commonly known as Nasturtium literally "nose-twister" or "nose-tweaker"), is a genus of roughly 80 species of annual and perennial herbaceous flowering plants and the only genus in the family Tropaeolaceae...	Tropaeolum majus Tropaeolum majus Tropaeolum majus is a flowering plant in the family Tropaeolaceae, originating in South America in the Andes from Bolivia north to Colombia. It is of cultivated, probably hybrid origin, with possible parent species including T. minus, T. moritzianum, T. peltophorum, and T...	Many plants, especially cucurbits (melons, cucumbers, gourds), beans, tomatoes, apple trees, brassicas (broccoli, cabbage, etc), radish		predatory insects	aphids, cabbage looper, squash bug, white fly, cucumber beetles	radish, cauliflower	Both work as trap crops for aphids, is among the best at attracting predatory insects
Sunflower Sunflower Sunflower is an annual plant native to the Americas. It possesses a large inflorescence . The sunflower got its name from its huge, fiery blooms, whose shape and image is often used to depict the sun. The sunflower has a rough, hairy stem, broad, coarsely toothed, rough leaves and circular heads...	Helianthus annuus	corn, tomatoes			aphids		Was grown as a companion for corn(maize) before modern Europeans arrived in the Americas, supposedly increases their production, ants herd aphids onto sunflowers, keeping them off neighboring plants
Tansy Tansy Tansy is a perennial, herbaceous flowering plant of the aster family, native to temperate Europe and Asia. It has been introduced to other parts of the world and in some areas has become invasive...	Tanacetum vulgare	cucurbits (cucumbers, squash, etc), raspberries and relatives, roses, corn			sugar ants, Japanese beetles, cucumber beetles, squash bugs, mice MICE -Fiction:Mice , alien species in The Hitchhiker's Guide to the GalaxyThe Mice -Acronyms:* "Meetings, Incentives, Conferencing, Exhibitions", facilities terminology for events...		Toxic to many animals, don't plant it where livestock browse
Yarrow Yarrow Achillea millefolium or yarrow is a flowering plant in the family Asteraceae, native to the Northern Hemisphere. In New Mexico and southern Colorado, it is called plumajillo, or "little feather", for the shape of the leaves. In antiquity, yarrow was known as herbal militaris, for its use in...	Achillea millefolium	many plants		predatory wasps, ladybugs, hoverflies, damselbug Nabidae The insect family Nabidae contains the damsel bugs. The terms damsel bug and nabid are synonymous. There are over 400 species. They are soft-bodied, elongate, winged terrestrial predators. Many damsel bugs catch and hold prey with their forelegs, similar to mantids... s			May increase the essential oil production of some herbs. Also improves soil quality, use the leaves to enrich compost, or as mulch.

Other

Other
Common Name	Latin Name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments
Alfalfa Alfalfa Alfalfa is a flowering plant in the pea family Fabaceae cultivated as an important forage crop in the US, Canada, Argentina, France, Australia, the Middle East, South Africa, and many other countries. It is known as lucerne in the UK, France, Australia, South Africa and New Zealand, and known as...	Medicago sativa	Cotton		assassin bug, big-eyed bug, Ladybug, parasitic wasps	Lygus bugs		Used by farmers to reduce cotton pests, a good crop to improve soil; fixes nitrogen like beans do. Also breaks up hardpan and other tough soil.

Apple

APPLE TREES
Common Name	Latin Name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments
Apple Apple The apple is the pomaceous fruit of the apple tree, species Malus domestica in the rose family . It is one of the most widely cultivated tree fruits, and the most widely known of the many members of genus Malus that are used by humans. Apple grow on small, deciduous trees that blossom in the spring...	Malus domestica		Clover Clover Clover , or trefoil, is a genus of about 300 species of plants in the leguminous pea family Fabaceae. The genus has a cosmopolitan distribution; the highest diversity is found in the temperate Northern Hemisphere, but many species also occur in South America and Africa, including at high altitudes... , Chive, Garlic Garlic Allium sativum, commonly known as garlic, is a species in the onion genus, Allium. Its close relatives include the onion, shallot, leek, chive, and rakkyo. Dating back over 6,000 years, garlic is native to central Asia, and has long been a staple in the Mediterranean region, as well as a frequent... , Leek Leek The leek, Allium ampeloprasum var. porrum , also sometimes known as Allium porrum, is a vegetable which belongs, along with the onion and garlic, to family Amaryllidaceae, subfamily Allioideae... , Nasturtium Nasturtium Tropaeolum , commonly known as Nasturtium literally "nose-twister" or "nose-tweaker"), is a genus of roughly 80 species of annual and perennial herbaceous flowering plants and the only genus in the family Tropaeolaceae... , Southernwood Southernwood Southernwood is a flowering plant. Found in Europe, the genus Artemisia was named for the goddess Artemis. Southernwood is known by many other names including Old Man, Boy's Love, Oldman Wormwood, Lover's Plant, Appleringie, Garderobe, Our Lord's Wood, Maid's Ruin, Garden Sagebrush, European Sage,... , Daffodils, Comfrey Comfrey Comfrey is an important herb in organic gardening. It is used as a fertilizer and also has many purported medicinal uses...			Cedar Juniper Junipers are coniferous plants in the genus Juniperus of the cypress family Cupressaceae. Depending on taxonomic viewpoint, there are between 50-67 species of juniper, widely distributed throughout the northern hemisphere, from the Arctic, south to tropical Africa in the Old World, and to the... because of apple-cedar rust Gymnosporangium juniperi-virginianae Gymnosporangium juniperi-virginianae is a plant pathogen that causes cedar-apple rust. In virtually any location where apples or crabapples and Eastern red cedar coexist, cedar apple rust can be a destructive or disfiguring disease on both the apples and cedars... . Walnut Walnut Juglans is a plant genus of the family Juglandaceae, the seeds of which are known as walnuts. They are deciduous trees, 10–40 meters tall , with pinnate leaves 200–900 millimetres long , with 5–25 leaflets; the shoots have chambered pith, a character shared with the wingnuts , but not the hickories... because its roots produce growth inhibitors that apple trees are sensitive to

Apricot

APRICOT TREES
Common Name	Latin Name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments
Apricot Apricot The apricot, Prunus armeniaca, is a species of Prunus, classified with the plum in the subgenus Prunus. The native range is somewhat uncertain due to its extensive prehistoric cultivation.- Description :...	Prunus armeniaca					peppers	A fungus that peppers are prone to can infect apricot trees causing a lot of harm.

Walnut

WALNUT TREES
Common Name	Latin Name	Helps	Helped by	Attracts	Repels / Distracts	Avoid	Comments
Walnut Walnut Juglans is a plant genus of the family Juglandaceae, the seeds of which are known as walnuts. They are deciduous trees, 10–40 meters tall , with pinnate leaves 200–900 millimetres long , with 5–25 leaflets; the shoots have chambered pith, a character shared with the wingnuts , but not the hickories...	Juglans		European Alder (sacrifice plant)				Black walnut is harmful to the growth of all nightshade plants, including Datura Datura Datura is a genus of nine species of vespertine flowering plants belonging to the family Solanaceae. Its precise and natural distribution is uncertain, owing to its extensive cultivation and naturalization throughout the temperate and tropical regions of the globe... or Jimson weed, eggplant, mandrake Mandrake (plant) Mandrake is the common name for members of the plant genus Mandragora, particularly the species Mandragora officinarum, belonging to the nightshades family... , deadly nightshade Deadly nightshade Atropa belladonna or Atropa bella-donna, commonly known as Belladonna, Devil's Berries, Death Cherries or Deadly Nightshade, is a perennial herbaceous plant in the family Solanaceae, native to Europe, North Africa, and Western Asia. The foliage and berries are extremely toxic, containing tropane... or belladonna, capsicum Capsicum Capsicum is a genus of flowering plants in the nightshade family, Solanaceae. Its species are native to the Americas where they have been cultivated for thousands of years, but they are now also cultivated worldwide, used as spices, vegetables, and medicines - and have become are a key element in... (paprika Paprika Paprika is a spice made from the grinding of dried fruits of Capsicum annuum . In many European languages, the word paprika refers to bell peppers themselves. The seasoning is used in many cuisines to add color and flavor to dishes. Paprika can range from mild to hot... , chile pepper), potato Potato The potato is a starchy, tuberous crop from the perennial Solanum tuberosum of the Solanaceae family . The word potato may refer to the plant itself as well as the edible tuber. In the region of the Andes, there are some other closely related cultivated potato species... , tobacco Tobacco Tobacco is an agricultural product processed from the leaves of plants in the genus Nicotiana. It can be consumed, used as a pesticide and, in the form of nicotine tartrate, used in some medicines... , tomato Tomato The word "tomato" may refer to the plant or the edible, typically red, fruit which it bears. Originating in South America, the tomato was spread around the world following the Spanish colonization of the Americas, and its many varieties are now widely grown, often in greenhouses in cooler... , and petunia Petunia Petunia is a widely cultivated genus of flowering plants of South American origin, closely related with tobacco, cape gooseberries, tomatoes, deadly nightshades, potatoes and chili peppers; in the family Solanaceae. The popular flower derived its name from French, which took the word petun, meaning... .