Pet safety
Is Ornamental Oreganotoxic to cats & dogs?
Origanum × hybridum
Quick verdict — at a glance
- Toxic to cats?
- Yes — mildly
- Toxic to dogs?
- Yes — mildly
- ASPCA classification
- Mildly toxic to pets · botanical name Origanum × hybridum
Is ornamental oregano safe for cats and dogs?
Not entirely — ornamental oregano is mildly toxic to cats and dogs. It rarely causes serious harm, but chewing it triggers real discomfort, so keep it out of a pet's reach. This classification follows the ASPCA Toxic and Non-Toxic Plant List, the most widely used reference for companion-animal plant safety in the US and the standard most UK vets cite as well. The ASPCA lists both oregano (Origanum vulgare) and marjoram (Origanum majorana) as mildly toxic to dogs and cats, with gastrointestinal irritants (volatile phenolic oils) causing vomiting and diarrhoea. Origanum × hybridum cultivars contain the same essential oils; treat as mildly toxic consistent with the genus-level ASPCA listings.
| Pet | Toxic? | Per ASPCA |
|---|---|---|
| Cats | Yes (mild) | Mildly toxic to pets |
| Dogs | Yes (mild) | Mildly toxic to pets |
What happens if a pet eats ornamental oregano?
The ASPCA lists both oregano (Origanum vulgare) and marjoram (Origanum majorana) as mildly toxic to dogs and cats, with gastrointestinal irritants (volatile phenolic oils) causing vomiting and diarrhoea. Origanum × hybridum cultivars contain the same essential oils; treat as mildly toxic consistent with the genus-level ASPCA listings. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to ornamental oregano, treat it as a suspected ingestion and act on the steps below.
What to do if your pet ate ornamental oregano
- Remove any plant material from your pet's mouth and move ornamental oregano out of reach.
- Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
- Do not induce vomiting unless a vet or poison-control specialist instructs you to.
- Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
- Bring a leaf or photo of ornamental oregano to the appointment so it can be treated correctly.
This page is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide rather than the plant. If you are worried, always contact a vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.
Pet-safe alternatives to ornamental oregano
Want the same look without the risk? These plants are listed as non-toxic to cats and dogs by the ASPCA and have similar care needs:
- Basil — non-toxic to cats and dogs (care guide)
- Herb garden — non-toxic to cats and dogs (care guide)
- Rosemary — non-toxic to cats and dogs (care guide)
- Thyme — non-toxic to cats and dogs (care guide)
Ornamental Oregano and pets — frequently asked questions
Is ornamental oregano toxic to cats?
Ornamental Oregano (Origanum × hybridum) is mildly toxic to cats according to the ASPCA. The ASPCA lists both oregano (Origanum vulgare) and marjoram (Origanum majorana) as mildly toxic to dogs and cats, with gastrointestinal irritants (volatile phenolic oils) causing vomiting and diarrhoea. Origanum × hybridum cultivars contain the same essential oils; treat as mildly toxic consistent with the genus-level ASPCA listings. Keep it out of reach and contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 if your cat chews it.
Is ornamental oregano toxic to dogs?
Per the ASPCA, Ornamental Oregano (Origanum × hybridum) is mildly toxic to dogs. Dogs often chew more enthusiastically than cats, so a toxic plant like ornamental oregano is best removed from the floor and low shelves entirely.
What happens if my pet eats ornamental oregano?
The ASPCA lists both oregano (Origanum vulgare) and marjoram (Origanum majorana) as mildly toxic to dogs and cats, with gastrointestinal irritants (volatile phenolic oils) causing vomiting and diarrhoea. Origanum × hybridum cultivars contain the same essential oils; treat as mildly toxic consistent with the genus-level ASPCA listings. Signs usually appear soon after chewing rather than hours later. If you see drooling, pawing at the mouth, head-shaking, vomiting, loss of appetite, or unusual lethargy after your pet has had access to ornamental oregano, treat it as a suspected ingestion and act on the steps below.
What should I do if my cat or dog ate ornamental oregano?
Stay calm. Remove any remaining plant material from your pet's mouth and take the plant away so they cannot eat more. Note roughly how much was eaten and when. Do not make your pet vomit unless a vet or poison-control specialist tells you to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice. Bringing a photo or a leaf of ornamental oregano to the appointment helps the vet treat it correctly.
What are pet-safe alternatives to ornamental oregano?
If you want a similar look without the risk, good non-toxic swaps include basil, herb garden, rosemary, thyme. All of these are listed as non-toxic to cats and dogs by the ASPCA, so they suit a home where pets have access to your plants.
Full ornamental oregano care
Pet-safety is one piece of the picture. For light, watering, soil, and troubleshooting, see the complete ornamental oregano care guide, or browse the full pet-safe plant library to check another plant before you buy it.