Published by Paul Ivinskas
Saturday, October 24, 2026

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Wildlife & plants · Wildflowers

Sacred datura

Canyon country's largest flower, which opens in the evening, and a poisonous plant.

A large white trumpet-shaped Datura flower fills the frame against green leaves.
File photograph, National Park Service archive. Photo: NPS / Neal Herbert · Public domain · National Park Service

Sacred datura has large, white, trumpet-shaped flowers, 6 to 9 inches long, that open in the evening and are pollinated by moths. The National Park Service says it produces the largest flower in canyon country.

It is a poisonous, narcotic plant that can kill if eaten. At Arches it grows in desert shrub and pinyon-juniper communities and blooms from May through October.

Seeing it

Look, don't touch or taste.

Places the sources name

Examples from the sources, not a complete range or a sighting guide.

Related profiles

Scale-like Utah juniper foliage and round cones
File photo: Scale-like Utah juniper foliage and round cones — Bears Ears, September 2010. Photo: brewbooks from near Seattle, USA · CC BY-SA 2.0 · Wikimedia Commons
Trees

Utah juniper

A drought-tolerant evergreen with scale-covered twigs, fibrous bark, and berry-like cones that feed wildlife.

Juniperus osteosperma

Pinyon pine needles and cones in Arches National Park
File photo: Pinyon pine needles and cones in Arches National Park (2016-09-07 23:38:35). Photo: Krzysztof Ziarnek, Kenraiz · CC BY-SA 4.0 · Wikimedia Commons
Trees

Two-needle pinyon

The small pine of pinyon-juniper woodland, with needles in pairs.

Pinus edulis

A green Fremont cottonwood tree beside red sandstone
File photo: A green Fremont cottonwood tree beside red sandstone — Johnson Lakes Canyon, Kane County, May 2016. Photo: Andrey Zharkikh from Salt Lake City, USA · CC BY 2.0 · Wikimedia Commons
Trees

Fremont cottonwood

A broad-crowned river tree whose new generations depend on the right combination of flowing water, exposed sediment, and moisture.

Populus fremontii

Yellow-flowering rubber rabbitbrush above the Jordan River
File photo: Yellow-flowering rubber rabbitbrush above the Jordan River — Jordan River Parkway near Salt Lake City, September 2004. Photo: Cory Maylett · CC BY-SA 4.0 · Wikimedia Commons
Shrubs

Rubber rabbitbrush

A flexible-stemmed native shrub whose late-season yellow flowers extend feeding opportunities for pollinators.

Ericameria nauseosa

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