A fernery is a specialized garden

Garden

A garden is a planned space, usually outdoors, set aside for the display, cultivation, and enjoyment of plants and other forms of nature. The garden can incorporate both natural and man-made materials. The most common form today is known as a residential garden, but the term garden has...

 for the cultivation and display of fern

Fern

A fern is any one of a group of about 12,000 species of plants belonging to the botanical group known as Pteridophyta. Unlike mosses, they have xylem and phloem . They have stems, leaves, and roots like other vascular plants...

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In many countries, ferneries are indoors or at least sheltered or kept in a shadehouse to provide a moist environment, filtered light and protection from frost and other extremes, some ferns native to arid regions require protection from rain and humid conditions on the other hand, and will grow best in full sun. In mild climates ferneries are often outside and have an array of different species that grow under similar conditions.