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jimson weed seed pod

The seed pods of the plant start off green but will split when ripe and release flat, tan-to-black, kidney-shaped seeds that will not germinate before the pod ripens, but when they reach that point, they will remain viable for a few years. In some cases, these plants can become invasive if the seeds spread in areas where the plant is not native.

Mature sacred thornapple plants can grow up to 3 feet tall, and they branch out widely. Their leaves can grow up to 5 inches long, with short hairs and a noxious scent, traits that it shares with many of its peers. Their beautiful flowers tend to bloom from April through October and can grow to be 10 inches or longer in some species. Some researchers are looking into Datura metal absorption to remove heavy metals from various environments.

To keep seeds for storage and future planting, the seeds must be dried, ideally on paper towels or other absorbent materials. They should be stored in an airtight container in a cool, dark area.

Planting Datura Seeds

The Datura genus represents around nine species of poisonous flowering plants that include the sacred thornapple (Datura wrightii, USDA growing zones 9 through 11), jimson weed (Datura stramonium, growing zones 6 through 9) and toloache (Datura inoxia, growing zones 9 through 10). The plants are sprawling annuals or short-lived perennials, perhaps best known for their wavy, trumpet-shaped flowers that can grow in many different colors.

It is best to sow seeds 1/8-inch deep in fertile, well-drained soil. The ideal temperatures for seeding plants are 60 to 65 degrees Fahrenheit, and the plants enjoy sun to part shade and ample moisture. Datura plants can also be grown from cuttings of mature individuals. Many Datura species’ seeds germinate in late spring or early summer and often grow in places such as roadsides, pastures, orchards, ditches, unmanaged areas, etc.

Gardeners prize Datura plants (Datura spp.) for their distinct, elongated flowers and odd foliage. While some people around the world consider the plants to be weeds, others actively try to cultivate the plants in their garden. It is not a particularly difficult plant to cultivate, given certain circumstances, and the seed pods themselves are relatively hardy. With some easy steps, Datura plant care is a breeze.

Datura plants need a good deal of room, and they can grow quickly to reach several feet assuming the weather gets warm enough. They are commonly seen in pots, but they fair best in the ground, though they cannot survive cold weather. They require very little by the way of pruning and have few if any pests, though they may attract mealybugs, spider mites and whiteflies.

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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.

Found on most soil types, but prefers rich soils, including disturbed soils rich in manure (i.e. barnyards).

Additional Information:

Rotary Hoeing: Hoe before weeds exceed 1/4 inch in height. Once jimsonweed is established it is difficult to control.

Decay: Seeds decay more readily on the soil surface.