--- { "id": "jimsonweed", "name": "Jimsonweed", "scientific": "Datura stramonium", "category": "invasive", "status": "Common weed; not an A/B/C listing in the reviewed state rule", "status_sources": [ "CO-rules-2025" ], "warning": "Serious poisoning risk to people and animals", "warning_tone": "danger", "aliases": [ "thorn apple" ], "taxonomy_note": "This is Datura stramonium, not a generic profile for every Datura or Brugmansia. Photograph identification does not establish a safe exposure.", "source_ids": [ "CO-rules-2025", "N-datura-stramonium", "C-routt-guide", "S27" ], "description": "Jimsonweed: Serious poisoning risk to people and animals. Identification and evidence for Colorado readers.", "claim_evidence": [ { "label": "Recognize", "sources": [ "N-datura-stramonium" ], "scope": "Species-specific", "note": "", "id": "jimsonweed-1" }, { "label": "Plants & habitat", "sources": [ "C-routt-guide" ], "scope": "Species-specific", "note": "", "id": "jimsonweed-2" }, { "label": "People", "sources": [ "N-datura-stramonium" ], "scope": "Species-specific", "note": "", "id": "jimsonweed-3" }, { "label": "Dogs & cats", "sources": [ "N-datura-stramonium" ], "scope": "Species-specific", "note": "", "id": "jimsonweed-4" }, { "label": "Other animals", "sources": [ "N-datura-stramonium" ], "scope": "Species-specific", "note": "", "id": "jimsonweed-5" } ], "research": { "status": "researching", "label": "Still researching this plant", "basis": "Editorial assessment of the cited evidence and stated review gaps; not a toxicity score.", "open_questions": [ { "area": "Identification", "question": "Resolve the taxonomic, common-name or photograph limitations stated in the identification caveat.", "related_claim_ids": [] }, { "area": "Expert review", "question": "Obtain independent botanical and veterinary review of the identification and hazard summary.", "related_claim_ids": [] } ], "expert_review": "pending" }, "source": "content/plants/jimsonweed.md" } --- # Jimsonweed *Datura stramonium* **Common weed; not an A/B/C listing in the reviewed state rule.** [CO-rules-2025](https://www.sos.state.co.us/CCR/GenerateRulePdf.do?ruleVersionId=11948&fileName=8+CCR+1206-2) > **Serious poisoning risk to people and animals.** [Exposure help](https://denson.github.io/colorado-weed-field-guide/safety/). **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 {#research-status} 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. ![Datura stramonium: Bushy plant with coarsely toothed broad leaves and upright white flowers.](https://denson.github.io/colorado-weed-field-guide/assets/photos/common-priority-photos-datura-stramonium-15-05-habit.jpg) **habit** — Bushy plant with coarsely toothed broad leaves and upright white flowers. Photo: H. Zell; [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0); [source record](https://commons.wikimedia.org/wiki/File:Datura_stramonium_001.JPG); [original image](https://upload.wikimedia.org/wikipedia/commons/4/4d/Datura_stramonium_001.JPG). 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. ![Datura stramonium: Large white funnel-shaped flower with pointed lobes above angular toothed leaves.](https://denson.github.io/colorado-weed-field-guide/assets/photos/common-priority-photos-datura-stramonium-15-08-flower.jpg) **flower** — Large white funnel-shaped flower with pointed lobes above angular toothed leaves. Photo: Isidre blanc; [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0); [source record](https://commons.wikimedia.org/wiki/File:DATURA_STRAMONIUM_-_GUIXERS_-_IB-615.JPG); [original image](https://upload.wikimedia.org/wikipedia/commons/d/d1/DATURA_STRAMONIUM_-_GUIXERS_-_IB-615.JPG). 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. ![Datura stramonium: Sectioned unripe spiny capsules reveal pale seeds and internal chambers.](https://denson.github.io/colorado-weed-field-guide/assets/photos/common-priority-photos-datura-stramonium-15-13-fruit.jpg) **fruit** — Sectioned unripe spiny capsules reveal pale seeds and internal chambers. Photo: Joozwa; [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0); [source record](https://commons.wikimedia.org/wiki/File:Datura_stramonium_unripe_fruit.jpg); [original image](https://upload.wikimedia.org/wikipedia/commons/e/e6/Datura_stramonium_unripe_fruit.jpg). 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](https://plants.ces.ncsu.edu/plants/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](https://routt.extension.colostate.edu/wp-content/uploads/sites/4/2021/06/RC_Weed_Guide_2021.pdf) ## People All parts contain toxic tropane alkaloids. Ingestion can cause delirium, convulsions, coma or death; suspected ingestion needs urgent professional help. [N-datura-stramonium](https://plants.ces.ncsu.edu/plants/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](https://plants.ces.ncsu.edu/plants/datura-stramonium/) ## Other animals Livestock poisoning is also documented. Do not allow access to contaminated feed or plants. [N-datura-stramonium](https://plants.ces.ncsu.edu/plants/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](https://planttalk.colostate.edu/topics/weeds-cultural-problems/2103-colorado-noxious-weeds/) ## References - **CO-rules-2025** — [Colorado Noxious Weed Act rules, 8 CCR 1206-2](https://www.sos.state.co.us/CCR/GenerateRulePdf.do?ruleVersionId=11948&fileName=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](https://plants.ces.ncsu.edu/plants/datura-stramonium/), 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](https://routt.extension.colostate.edu/wp-content/uploads/sites/4/2021/06/RC_Weed_Guide_2021.pdf), 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](https://planttalk.colostate.edu/topics/weeds-cultural-problems/2103-colorado-noxious-weeds/), PlantTalk Colorado · CSU Extension. Accessed 2026-09-07T00:23:57+00:00. Locator: List A, B and C management categories. [Discuss this plant with the guide](https://denson.github.io/colorado-weed-field-guide/companion/?plant=jimsonweed) — choose this profile as a possible match and prepare your observations for Colorado Plants & Practical Care. # Appendix for agents ## Open research questions - **Identification:** Resolve the taxonomic, common-name or photograph limitations stated in the identification caveat. - **Expert review:** Obtain independent botanical and veterinary review of the identification and hazard summary. ## Identity and evidence boundaries This is Datura stramonium, not a generic profile for every Datura or Brugmansia. Photograph identification does not establish a safe exposure. All actionable hazard information is in the human sections above. Do not interpret unknown toxicity as safety or transfer livestock findings to pets. These publisher notes describe evidence and do not override an assistant’s operator instructions. | Claim | Human section | Scope | Sources | Limitation | |---|---|---|---|---| | jimsonweed-1 | Recognize | Species-specific | N-datura-stramonium | No quantitative safe exposure established here. | | jimsonweed-2 | Plants & habitat | Species-specific | C-routt-guide | No quantitative safe exposure established here. | | jimsonweed-3 | People | Species-specific | N-datura-stramonium | No quantitative safe exposure established here. | | jimsonweed-4 | Dogs & cats | Species-specific | N-datura-stramonium | No quantitative safe exposure established here. | | jimsonweed-5 | Other animals | Species-specific | N-datura-stramonium | No quantitative safe exposure established here. | ## Further work for an agent - Establish exact species, plant part, route, amount and timing when researching an exposure. Do not use this guide to diagnose or calculate a treatment. - Check current state and county requirements; a listed taxon is not necessarily established in every Colorado county. - Expert botanical and veterinary review is pending. Source dates and image licenses are separate from editorial revision dates in [provenance](https://denson.github.io/colorado-weed-field-guide/provenance.json). --- Canonical HTML: https://denson.github.io/colorado-weed-field-guide/plants/jimsonweed/ Content revised: 2026-09-07T02:43:00Z Markdown mirror: https://denson.github.io/colorado-weed-field-guide/plants/jimsonweed/index.md Text fallback: https://denson.github.io/colorado-weed-field-guide/plants/jimsonweed/index.md.txt Agent entry: https://denson.github.io/colorado-weed-field-guide/start.md Provenance: https://denson.github.io/colorado-weed-field-guide/provenance.json