Ohio State University Extension Bulletin 866-98

Identifying Noxious Weeds of Ohio

Bulletin 866-98


Cressleaf Groundsel
(Senecio glabellus)

Habitat: wet woods, swamps, streambanks, pastures, roadsides and fields

Life cycle: biennial

Growth Habit: 1-3 feet tall, branched

Leaves: alternate, deeply divided with wide, round-toothed lobes; basal and lower leaves up to 8 inches long; upper leaves similar but smaller

Stems: succulent, smooth and hollow

Inflorescence: April - June. Clusters of bright yellow, daisylike blooms, 0.5 - 1 inch in diameter. Each flower is enclosed by green bracts.

Fruit: white pappus

Roots: fibrous

Similar weeds: Common groundsel (Senecio vulgaris) usually does not have a hollow stem and is shorter than Cressleaf groundsel.

The problem is.... this weed is poisonous to grazing animals and spreads very quickly. The name groundsel is from the Anglo-Saxon word groundeswelge which means "ground swallower."

Cressleaf groundsel

Cressleaf groundsel is taller than common groundsel and has a hollow
stem. Photo courtesy of Arlyn W. Evans, Memphis, TN

Cressleaf groundsel


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