Hardy aromatic perennial with finely cut silvery foliage, used to flavour vermouth and bitters.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 4–9 | −34.4 °C to −1.1 °C | Plant tolerates down to this zone |
| RHS hardiness rating | H6 | −20 °C to −15 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 4–8 | −29 °C to −1 °C | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 1–5 | −15 °C to 10 °C | Plant tolerates down to this zone |
Growing notes
- Silvery, aromatic foliage traditionally used to flavour vermouth and bitters
- Spreads readily by runners and is very drought- and cold-hardy — can be invasive
- Contains thujone and is not for unsupervised internal use; consult a qualified practitioner before using medicinally
Categories
Related plants
Cross-check Roman wormwood against your zones