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Jimsonweed : Kentucky IPM

Jimsonweed (Datura stramonium)

Jimsonweed is a warm-season annual broadleaf weed with long narrow cotyledons. Its leaves are alternately arranged on the stem. When only the cotyledons are showing, jimsonweed can be confused with cocklebur. However, the cotyledons of jimsonweed are narrower and their tips are more pointed. jimsonweed seedlings

Also, the stems of jimsonweed are usually red or purplish in color while cocklebur stems are not. The pungent odor of jimsonweed when crushed is a distinguishing feature.

Jimsonweed plants As the jimsonweed leaves develop they become somewhat heart-shaped with smooth edges at the base and irregular edges near the tip.

This site was created and is maintained by Pat Dillon, Department of Entomology, University of Kentucky, S-225 Agricultural Science Ctr North, Lexington, KY USA  40546-0091 (phone: 859/257-3571). Please send questions or suggestions to: pdillon@uky.edu