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Weed Identification in Christmas Trees

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Jimsonweed - Datura stramonium L.
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Jimsonweed plant
Jimsonweed plant.
Jimsonweed seedling
Jimsonweed seedling.

Life cycle: Erect, branching summer annual.

Leaves
: Cotyledons are long and narrow with a prominent midvein. Leaves are alternate, oval to egg-shaped, 3 to 8 inches long, smooth with long petioles. First leaves are entire; later leaves have large, coarsely and unevenly toothed margins. Damaged leaves will emit a foul odor.

Stems
: Erect and branching, up to 5-foot-tall stems are hollow, generally smooth and green to purple. Damaged stems emit a foul odor.

Flowers and fruit
: Flower petals are large, white to purple in color and fused into a 2- to 5-inch-long tube. Fruit are very spiny, egg-shaped capsules with four valves. Each valve contains numerous flat, dark brown to black, round to kidney-shaped seeds.

Reproduction
: Seeds.

Toxicity: All plant parts are toxic to animals.
Jimsonweed fruit Jimsonweed leaf Mature jimsonweed fruit
Immature jimsonweed fruit. Jimsonweed leaf. Mature jimsonweed fruit.
The MSU IPM Program maintains this site as an access point to pest management information at MSU. The IPM Program is administered within the Department of Entomology, fueled by research from the Michigan Agricultural Experiment Station, delivered to citizens through MSU Extension, and proud to be a part of Project GREEEN.
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02/08/08