Dreamcatcher Alpacas
Plant safety · Deadly

Is Japanese Pieris Poisonous to Alpacas?

Japanese Pieris (Pieris japonica) — a shrub. Here is what alpaca owners need to know.

Updated 2026-10-02By the Dreamcatcher Alpacas editorial team
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Yes — Japanese pieris is highly poisonous. Small amounts can kill.

Keep alpacas completely away from this plant, including clippings and fallen leaves.

Japanese Pieris (Pieris japonica)
Japanese Pieris (Pieris japonica). Photo: Stan Shebs, CC BY-SA 3.0 via Wikimedia Commons.
Status
Deadly
Scientific name
Pieris japonica
Family
Ericaceae
Plant type
Shrub
Also known as
Andromeda, Lily-of-the-valley shrub
Toxic parts
Leaves and flowers
Toxic compound
Grayanotoxins

Why it matters

Sold as 'andromeda' or 'lily-of-the-valley shrub'. Several alpaca and llama deaths have been traced to pieris hedges near paddocks.

Signs of Japanese pieris poisoning in alpacas

  • Green, foamy regurgitation or drooling
  • Repeated attempts to vomit (unusual in camelids)
  • Colic, teeth grinding
  • Weakness, staggering, lying down
  • Slow heart rate, low blood pressure
  • Death in severe cases

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 Japanese pieris

  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

Pieris japonica, the Japanese andromeda or Japanese pieris, is a species of flowering plant in the heath family Ericaceae. It is native to eastern China, Taiwan, and Japan, where it grows in mountain thickets. This medium-sized evergreen shrub or tree is widely cultivated in gardens.From Wikipedia — “Pieris japonica”, licensed under CC BY-SA 4.0.

Where it grows

GBIF, the Global Biodiversity Information Facility, holds 9,631 recorded observations of Pieris japonica (Thunb.) D.Don ex G.Don worldwide, including 623 in the United States. It belongs to the Ericaceae family, together with Azalea, Mountain Laurel, Rhododendron, Sheep Laurel. See the occurrence map on GBIF.

Frequently asked questions

Is Japanese pieris poisonous to alpacas?
Yes. Yes — Japanese pieris is highly poisonous. Small amounts can kill. Sold as 'andromeda' or 'lily-of-the-valley shrub'. Several alpaca and llama deaths have been traced to pieris hedges near paddocks.
What part of Japanese pieris is toxic to alpacas?
Leaves and flowers.
What are the symptoms of Japanese pieris poisoning?
Green, foamy regurgitation or drooling, repeated attempts to vomit (unusual in camelids), colic, teeth grinding, weakness, staggering, lying down, slow heart rate, low blood pressure and death in severe cases.
Is dried Japanese pieris 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 Q2333372.