---
{
  "id": "safety",
  "title": "Plant exposure and safety",
  "source_ids": [
    "S26",
    "S04",
    "S22",
    "S25",
    "S27",
    "Fremont-list-definitions"
  ],
  "description": "Plant exposure and safety for the Colorado Plants & Practical Care",
  "source": "content/pages/safety.md"
}
---

# Plant exposure and safety

## People

**Call 911 for collapse, seizures, trouble breathing, or inability to wake the person.** In the United States, call Poison Control at **1-800-222-1222** for a suspected poisoning. Do not induce vomiting. [National Capital Poison Center](https://www.poison.org/first-aid-for-poisonings).

For skin or eye exposure, follow Poison Control’s first-aid directions and seek case-specific advice. Do not use a photograph or a lack of symptoms to rule out a dangerous exposure. [First aid for poisonings](https://www.poison.org/first-aid-for-poisonings).

## Dogs, cats and other pets

After suspected toxic-plant ingestion, contact your veterinarian or **ASPCA Poison Control: 888-426-4435** promptly; a consultation fee may apply. Identify the animal, the plant if known, the part eaten, approximate amount, and time of exposure. The information-gathering list is this guide’s practical preparation advice. [ASPCA Poison Control](https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/milkweed).

**Seed awns and burs can injure animals without chemical poisoning.** Grass awns can lodge in tissue and migrate. Keep pets away from mature awns and obtain veterinary advice for suspected embedded material. [UC Davis Veterinary Medicine: Foxtails](https://healthtopics.vetmed.ucdavis.edu/health-topics/foxtails).

## Read a hazard in context

- **Toxicity:** adverse effects from chemicals in the plant, sometimes specific to the animal, plant part or amount.
- **Contact injury:** sap, hairs, spines or awns can harm skin, eyes, paws or mouths.
- **Ecological harm:** crowding or displacement of vegetation is a different question from poisoning.
- **Evidence gap:** this guide’s review has not established an answer. It is never a green light to eat or feed a plant.

These labels describe how this guide organizes evidence. Even plants listed as non-toxic can cause stomach upset if eaten. Native plants and xeriscape plants are not automatically safe for pets. [ASPCA database scope](https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants).

## What Lists A, B and C mean {#weed-lists}

These are Colorado's noxious-weed management categories. The letters are separate from danger ratings for people, pets, livestock and other plants.

| State list | Meaning |
|---|---|
| **List A — Eradicate** | Uncommon in Colorado. All populations are designated for eradication statewide. |
| **List B — Stop the spread** | Established in some areas. Requirements vary by location: eradication, containment or suppression to stop further spread. |
| **List C — Manage widespread weeds** | Widespread and well established. Control is recommended by the state; local governments may require management. |

The short labels are this guide's plain-language summaries of [Fremont County's Colorado noxious-weed definitions](https://fremontcountyco.gov/weed-control/weed-identification). A plant's list designation does not describe its toxicity.

## Before removing a plant

Confirm the species using several features. Colorado has native thistles and many plants with similar flowers. Seek help from a local Extension or weed specialist when identification is uncertain.

Colorado’s A, B and C noxious-weed lists concern management priorities, not a poison-severity ranking. County requirements and site conditions matter. Use the current product label for any pesticide, including instructions that affect animal access. [CSU PlantTalk: Colorado Noxious Weeds](https://planttalk.colostate.edu/topics/weeds-cultural-problems/2103-colorado-noxious-weeds/).

# Appendix for agents

## Clinical boundaries

This is a reference guide, not a diagnostic tool. No dose calculator is provided. Exposure advice comes from the linked poison and veterinary organizations; the site does not supply home remedies. A livestock case does not establish a dog or cat dose. A horticultural “deer-resistant” label does not establish pet safety.

## Source scope

- S26 supports human emergency contacts, emergency signs and the instruction not to induce vomiting.
- S04 supports the ASPCA contact and consultation-fee note.
- S22 concerns foxtail/grass-awn injuries broadly, not a single grass species.
- S25 supports the limitation that even non-toxic plants can cause gastrointestinal upset.
- S27 supports the distinction between noxious-weed designation and general garden weeds; labels and local programs must be rechecked before action.
- Fremont-list-definitions supports the A/B/C management definitions and the distinction between state recommendations and local requirements for List C. The short action labels are editorial paraphrases; preserve the location-dependent requirements for List B and List C.

The hazard vocabulary and information-gathering checklist are editorial organization, not quoted clinical protocols.


---
Canonical HTML: https://denson.github.io/colorado-weed-field-guide/safety/

Content revised: 2026-09-21T19:48:00Z

Markdown mirror: https://denson.github.io/colorado-weed-field-guide/safety/index.md

Text fallback: https://denson.github.io/colorado-weed-field-guide/safety/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