Armoracia
horseradish
1 species
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Armoracia rusticanahorseradish
Distribution: Occurring in scattered locations east of the Cascades crest in Washington; Alaska to California, east across the U.S. and Canada to the Atlantic Coast.
Habitat: Disturbed areas including fields, roadsides and wastelots.
Origin: Introduced from Eurasia
Flowers: May-July
Growth Duration: Perennial