Alternate name: Wild Carrot
Family: Apiaceae, Carrot view all from this family
Description This is the wild form of the cultivated carrot. Biennial. Height: 3 ft. or more. Flowers are umbels, burgundy or pale pink before they open; the mature flower is a lacy rounded disc, bright white, 1-3 inches wide. Fruit: the dried bracts form an open brown ball, 1" diameter, with hooked spines. Leaf: alternate, glabrous, resembling parsley, but finer. Basal rosette may persist during winter. Glabrous white tap root. Introduced from Europe.
Warning The leaves, especially when wet, may cause skin irritation in some individuals.
Flower June to August.
Habitat Waysides, disturbed sites and open fields. Dry or well-drained soil. Sun to partial shade.
Range Continental U.S.
Discussion Also known as: bird's nest, wild carrot. Classified as a noxious weed by USDA. Plant leaves cause skin irritation in some people and cause cows to produce off-tasting milk after eating large quantities. Very similar in appearance to poison hemlock.