Jimsonweed
Discuss this plant with the guide — choose this profile as a possible match and prepare your observations for Colorado Plants & Practical Care.
Datura stramonium
Common weed; not an A/B/C listing in the reviewed state rule. CO-rules-2025
Serious poisoning risk to people and animals. Exposure help.
Identification caveat: This is Datura stramonium, not a generic profile for every Datura or Brugmansia. Photograph identification does not establish a safe exposure.
Still researching this plant
This is a sourced working profile. The cited findings are available below. Identification and source-photo limits are explained below. Independent botanical and veterinary review is pending. Uncertainty is not a finding that the plant is safe.
Three views of this plant
Source-identified reference photographs; these are not a complete identification key. A source location outside Colorado does not establish local occurrence.
H. Zell · CC BY-SA 3.0
Photo source and identification
Original record · Original image
Source page scientific identification plus visual morphology review of the selected photograph. This is a source-identified reference image, not a specimen-based taxonomic determination.
Wikimedia server-resized derivative; no crop, color change, or generative editing. Gallery display preserves the full image; the catalog preview uses a CSS crop.
Isidre blanc · CC BY-SA 3.0
Photo source and identification
Original record · Original image
Source page scientific identification plus visual morphology review of the selected photograph. This is a source-identified reference image, not a specimen-based taxonomic determination.
Wikimedia server-resized derivative; no crop, color change, or generative editing. Gallery display preserves the full image; the catalog preview uses a CSS crop.
Joozwa · CC BY-SA 3.0
Photo source and identification
Original record · Original image
Source page scientific identification plus visual morphology review of the selected photograph. This is a source-identified reference image, not a specimen-based taxonomic determination.
Wikimedia server-resized derivative; no crop, color change, or generative editing. Gallery display preserves the full image; the catalog preview uses a CSS crop.
Recognize
A coarse annual with toothed leaves, upright trumpet-shaped flowers and prickly seed capsules. N-datura-stramonium
Plants & habitat
A disturbed-ground weed included in Routt County’s guide. Seed contamination is a concern around animal areas. C-routt-guide
People
All parts contain toxic tropane alkaloids. Ingestion can cause delirium, convulsions, coma or death; suspected ingestion needs urgent professional help. N-datura-stramonium
Dogs & cats
NC State flags both dogs and cats. Keep pets from chewing any part, including seeds; suspected ingestion warrants prompt veterinary contact. N-datura-stramonium
Other animals
Livestock poisoning is also documented. Do not allow access to contaminated feed or plants. N-datura-stramonium
Before taking action
Confirm identification and the requirements of your county weed program. For chemical treatment, follow the current product label, including restrictions around animals and water. S27
References
- CO-rules-2025 — Colorado Noxious Weed Act rules, 8 CCR 1206-2, Colorado Secretary of State / Department of Agriculture. Accessed 2026-09-07T01:07:48+00:00. Locator: Parts 3.1, 4.1, 5.1; management provisions; effective May 15, 2025.
- N-datura-stramonium — datura stramonium — Plant Toolbox, NC State Extension. Accessed 2026-09-07T01:04:56+00:00. Locator: Description; Attributes; Problems; Poisonous to Humans.
- C-routt-guide — Routt County Weed Identification Guide, Routt County / Colorado State University Extension. Accessed 2026-09-07T01:14:14+00:00. Locator: Common weeds and poisonous plants; 2021 edition.
- S27 — 2103 – Colorado Noxious Weeds, PlantTalk Colorado · CSU Extension. Accessed 2026-09-07T00:23:57+00:00. Locator: List A, B and C management categories.