Aromatic European perennial with feathery foliage and flat clusters of yellow button flowers. Traditional strewing herb and natural insect repellent.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 3–8 | −40 °C to −6.7 °C | Plant tolerates down to this zone |
| RHS hardiness rating | H7 | down to −20 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 3–8 | −34 °C to −1 °C | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 1–4 | −15 °C to 5 °C | Plant tolerates down to this zone |
Growing notes
- Dynamic accumulator — particularly potassium
- Toxic if ingested in quantity due to thujone content; topical and repellent uses only
- Can be invasive — spreads by rhizomes; site within a contained bed
- Always consult a qualified medical or herbal practitioner before using any plant medicinally
Pet caution: Tansy is listed as potentially harmful to cats and/or dogs. Keep pets from grazing on it, and contact a vet if you suspect your animal has eaten some.
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Related plants
Cross-check Tansy against your zones