Large riparian European tree. Bark is the natural source of salicin — the precursor compound that led to the synthesis of aspirin.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 2–8 | −45.6 °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 2–8 | −40 °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
- Salicin and aspirin share the same broad cautions — sensitive individuals, gastric ulcers, anticoagulant interactions
- Roots are aggressive and water-seeking — never plant near drains, septic systems or underground pipes
- Host plant for an exceptional number of insect species
- Always consult a qualified medical or herbal practitioner before using any plant medicinally
Categories
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Cross-check Willow — White against your zones