Delaware Wildflowers • Families • Asteraceae
Sonchus asper
Spiny-leaf SowthistleAsteraceae — Aster family
Non-native
June 2003
A large plant, over 4' (1.2m) tall. References say this is an annual that blooms July - October. This one was blooming in May after a very mild winter; I wonder if it was in its second year.
White Clay Creek State Park -- Possum Hill
May 2020
A more typical plant, for me, growing in a pavement crack.
July 2020
Guide to Sonchus of Delaware
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Photos copyright David G. Smith
Information from the Delaware Flora Checklist used with author's permission.