Dreamcatcher Alpacas
Plant safety · Toxic

Is Rayless Goldenrod Poisonous to Alpacas?

Rayless Goldenrod (Isocoma pluriflora) — a shrub. Here is what alpaca owners need to know.

Updated 2026-10-02By the Dreamcatcher Alpacas editorial team
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Yes — rayless goldenrod is toxic to alpacas.

Keep it out of pastures, hay and reach of fences, and never feed trimmings.

Rayless Goldenrod (Isocoma pluriflora)
Rayless Goldenrod (Isocoma pluriflora). Photo: Sue in az, Public domain via Wikimedia Commons.
Status
Toxic
Scientific name
Isocoma pluriflora
Family
Asteraceae
Plant type
Shrub
Also known as
Jimmyweed, Southern Jimmyweed, southern goldenbush
Toxic parts
Leaves and stems
Toxic compound
Tremetol
Region
Southwestern U.S.

Why it matters

A rangeland shrub of the Southwest.

Signs of rayless goldenrod poisoning in alpacas

  • Trembling
  • Weakness
  • Heart muscle damage

Signs can appear within minutes (cyanide, cardiac toxins) or only after weeks of exposure (liver toxins). Many poisoned camelids are simply found dead, so prevention is everything.

What to do if your alpaca ate rayless goldenrod

  1. Move the herd away and remove any remaining plant material, clippings or fallen leaves.
  2. Call your veterinarian immediately, even if the alpaca looks normal. Say what was eaten, roughly how much and when.
  3. Bring a sample or clear photo of the plant to help identification.
  4. Do not give home remedies, oils or try to make the alpaca vomit unless your vet tells you to.
  5. Keep the animal quiet, in shade or shelter, with water available. Write down the time and every symptom you see.
  6. Check every other alpaca that had access, then remove the plant permanently (including roots).

Emergency: call your veterinarian immediately. If you cannot reach them, contact an animal poison control service (in the U.S., the ASPCA Animal Poison Control Center or Pet Poison Helpline; fees may apply). Bring a sample or photo of the plant.

About the plant

Isocoma pluriflora, commonly called southern jimmyweed or southern goldenbush, is a North American species of flowering perennial herbs in the family Asteraceae. It grows in northern Mexico and in the southwestern and south-central United States.From Wikipedia — “Isocoma pluriflora”, licensed under CC BY-SA 4.0.

Where it grows

Main range of concern: Southwestern U.S.. GBIF, the Global Biodiversity Information Facility, holds 1,154 recorded observations of Isocoma pluriflora (Torr. & A.Gray) Greene worldwide, including 961 in the United States. It belongs to the Asteraceae family, together with Cocklebur, Common Groundsel, Tansy Ragwort, White Snakeroot, Burdock. See the occurrence map on GBIF.

Frequently asked questions

Is rayless goldenrod poisonous to alpacas?
Yes. Yes — rayless goldenrod is toxic to alpacas. A rangeland shrub of the Southwest.
What part of rayless goldenrod is toxic to alpacas?
Leaves and stems.
What are the symptoms of rayless goldenrod poisoning?
Trembling, weakness and heart muscle damage.
Is dried rayless goldenrod safe?
Drying does not reliably make poisonous plants safe. Treat dried leaves and contaminated hay with the same caution.

Keeping pastures safe

  • Walk every paddock and fence line each season and remove toxic plants, including roots.
  • Never throw garden, hedge or lawn clippings over the fence.
  • Check pastures after storms for fallen branches (cherry, red maple).
  • Buy hay from known sources and inspect it for weeds.
  • Keep pastures well managed — hungry alpacas eat plants they would normally avoid.

Browse the full toxic plant checker, the printable list of poisonous plants and the list of safe plants.

This page is educational and does not replace advice from a veterinarian who has examined your animals. Camelid medicine uses many drugs “extra-label”, so dosing must come from your vet. In an emergency, call your vet first. Read our disclaimer · How we write and review content.

Data: plant status compiled from veterinary toxicology references (see sources); taxonomy and occurrences from GBIF; identifiers from Wikidata Q6085532.