Delaware Wildflowers
Alliaria petiolata
(Bieb.) Cavara & Grande
Garlic Mustard
Brassicaceae
— Mustard family
Invasive non-native
Middle Run Valley Natural Area
May 2001
White Clay Creek State Park -- Possum Hill
May 2012
Garlic mustard is
biennial
; the round leaves are from plants in their first year. The other plants are
Japanese stiltgrass
.