Washington state tartan is the official state tartan

Tartan

Tartan is a pattern consisting of criss-crossed horizontal and vertical bands in multiple colours. Tartans originated in woven wool, but now they are made in many other materials. Tartan is particularly associated with Scotland. Scottish kilts almost always have tartan patterns...

 established by the Washington state legislature.

Consisting of a green background with stripes of blue, white, yellow, red, and black, the state tartan of Washington was designed by Margaret McLeod van Nus and Frank Cannonito in 1988 to commemorate the Washington centennial celebration. It was registered with the Scottish Tartans Society

Scottish Tartans Society

The Scottish Tartans Society , now defunct, was a society committed to the recording and preservation of woven tartan designs from around the world; it maintained the Register of All Publicly Known Tartans. The society was first formed in 1963 and existed for about 40 years...

 after its adoption by the state legislature in 1991. The colors represent various aspects of nature: green symbolizes rich forests of the state; blue the lakes, rivers and ocean; white the snow-capped mountains; red the apple and cherry crops; yellow the wheat and grain crops; and black the eruption

1980 eruption of Mount St. Helens

The 1980 eruption of Mount St. Helens, a stratovolcano located in Washington state, in the United States, was a major volcanic eruption. The eruption was the only significant one to occur in the contiguous 48 U.S. states since the 1915 eruption of Lassen Peak in California...

 of Mount St. Helens

Mount St. Helens

Mount St. Helens is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United States. It is south of Seattle, Washington and northeast of Portland, Oregon. Mount St. Helens takes its English name from the British diplomat Lord St Helens, a...

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