Long-lived deciduous tree with deep tap root and characteristic acorns.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 4–8 | −34.4 °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 4–7 | −29 °C to −7 °C | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 1–4 | −15 °C to 5 °C | Plant tolerates down to this zone |
About Oak (English)
English oak supports a greater number of associated species than almost any other tree in Britain, from gall wasps to lichens, which is why it is so central to woodland conservation. Its timber is dense, strong and rich in tannin, and it built ships, cathedral roofs and barrels. Acorns are toxic to horses and cattle in quantity because of that same tannin. The tree is exceptionally long-lived, and ancient specimens commonly become hollow without losing stability — hollowing is a normal part of an old oak's life rather than a sign that it is failing.
Growing notes
- Slow to establish but extremely long-lived
- Heavy demand on soil moisture and nutrients in establishment years
Pet caution: Oak (English) 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
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