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Devil's Trumpet, Thorn Apple, Jimson Weed, Jamestown Weed, Torna Loco
Datura ceratocaula

Family: Solanaceae (so-lan-AY-see-ee) (Info)
Genus: Datura (duh-TOO-ruh) (Info)
Species: ceratocaula (ser-uh-toh-KAW-luh) (Info)
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24-36 in. (60-90 cm)


24-36 in. (60-90 cm)

36-48 in. (90-120 cm)


USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun

Sun to Partial Shade


All parts of plant are poisonous if ingested

Bloom Color:



White/Near White

Bloom Time:

Mid Summer

Late Summer/Early Fall






Other details:

Very high moisture needs; suitable for bogs and water gardens

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

From herbaceous stem cuttings

From woody stem cuttings

From softwood cuttings

From semi-hardwood cuttings

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; germinate in a damp paper towel

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds


This plant has been said to grow in the following regions:

Hereford, Arizona

Oak View, California

Palm Coast, Florida

East Brookfield, Massachusetts

Cottage Grove, Oregon

Bellingham, Washington

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Gardeners' Notes:


On Aug 10, 2007, Opoetree from Oak View, CA wrote:

This plant grows wild in my area. We let them alone because we enjoy their beauty...and the scent is wildly attractive! I always look forward to spotting where one will turn up unannounced...but, definitely welcomed!


On Jan 1, 2002, poppysue from Westbrook, ME (Zone 5a) wrote:

Datura ceratocaula is the only species that naturally grows in shallow water or swamp conditions. It grows 12-36 inches tall and the leaves are toothed with short white hairs on the undersides. All summer it bears wide, funnel-shaped flowers that are white to pale pink and have a bluish tint on the outer sides. The seedpods are smooth (no spines), hang downward, and will fall apart when the seeds are ripe. Growth is rather sparse compared to other species but the large fragrant flowers make them worthy of cultivation. The 7-inch blooms open up in mid-day and close the following morning. A large group planting will provide the nicest display. D.ceratocaula will do best in a sunny and warm location. A damp soil or shallow water is best but they will tolerate ordinary garden soil with suffici... read more