Spiny-leaf Sowthistle
Sonchus asperAsteraceae — 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
Search Google • Delaware • USDA
Photos copyright David G. Smith
Information from the Delaware Flora Checklist used with author's permission.