Our own farm-grown Jimson Weed (Datura stramonium) seeds for organic growing. All seeds are grown on our farm without the use of chemicals; and are open-pollinated, hybrid-free and GMO-free. 1 pkg (approx 30-50 seeds) The Weed Science Program’s goal at MSU is to provide science-based research and extension information on integrated weed management in field crops.
Jimson Weed Seeds
Our own farm-grown Jimson Weed (Datura stramonium) seeds for organic growing.
All seeds are grown on our farm without the use of chemicals; and are open-pollinated, hybrid-free and GMO-free.
1 pkg (approx 30-50 seeds)
Jimson Weed, Jamestown Weed, Thorn Apple, Devil’s Apple, Angel Trumpets, Moon Flower, Toloache
Solanaceae (Nightshade Family)
Central and South America
Bushy plant to 3ft tall. Impressive white trumpet shaped flowers are followed by large egg-shaped seed capsules covered with numerous sharp spines.
Full sun, well-drained soil.
The seeds germinate easily and can be sown indoors in flats and transplanted out once all danger of frost has passed.
Easy to grow. Plants are most impressive when given regular water and good garden soil. Will self seed and potentially become weedy unless deadheaded to prevent seed formation.
Not for internal use.
Antispasmodic, anodyne, sedative and narcotic. Can be applied topically to ease rheumatic pain. All plant parts are toxic in small or large doses.
Drought Tolerant, Apothecary Garden, Deer Resistant.
Summer annual. Jimsonweed emerges in spring (May through mid-June), sets seed in late summer/fall and dies with the first killing frost.
Emerges from soil depths of 3-inches or less.
Production Range: Without competition one jimsonweed plant can produce 50 or more seed capsules and 30,000 or more seeds. Each seed capsule generally contains 600 to 700 seeds. Under severe competition one plant may only produce 3 to 4 small seed capsules. Seed capsules are produced until the first hard frost.
Dispersal Mechanisms: Seed capsules and seed are buoyant in water and can remaining floating for 10 days or more. Seeds are dispersed by dehiscence (splitting open of the seed capsule) up to a distance of 3 to 10 feet from the parent plant. Jimsonweed can also be dispersed by farm machinery, water, and impurities in commercial seed.
Longevity: Moderate to highly persistent. Ninety-one percent of seeds germinated after 39 years in a buried seed experiment.
Dormancy: Very little dormancy of mature seeds. Seeds are mature 30 day after fertilization, capsule opens 50 days after pollination and seeds will continue to ripen after fertilization even if the branch where the seed capsule is located is not attached to the plant.
One of the more competitive weeds. 4 to13 plants per yard2 can reduce yields of direct-seeded tomatoes by 26 to 71% and soybeans by 15 to 45%. Jimsonweed also interferes with harvesting operations.
Preferred Soil/Field Conditions:
Found on most soil types, but prefers rich soils, including disturbed soils rich in manure (i.e. barnyards).
Predation/grazing: Jimsonweed vegetation and seeds are poisonous due to production of tropane alkaloids. Livestock normally avoid eating jimsonweed unless no other vegetation is available.
Decay: Seeds decay more readily on the soil surface.
Tillage: Seedlings are readily killed by tillage. However, older plants may regenerate from lower nodes that are clipped or trampled.
Rotary Hoeing: Hoe before weeds exceed 1/4 inch in height. Once jimsonweed is established it is difficult to control.
Flaming: Effective on small jimsonweed.
Crop rotation: Not a weed of small grains or forages.
Planting date: Tillage in the spring triggers jimsonweed to germinate. Because of the extended time of emergence, planting early or planting late to reduce jimsonweed infestations may not be effective.
Application timing and effectiveness: Several herbicides are effective in corn, soybean, dry bean, and sugar beets. Control is greater when herbicides are applied to smaller jimsonweed plants. Please refer to E-434, “MSU Weed Control Guide for Field Crops,” for herbicide recommendations.
Jimsonweed can serve as an alternate host of many insect pests and diseases of Solanaceous crops, such as tomatoes and potatoes.