Evergreen fruit tree producing year-round in warm climates.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 9–11 | −6.7 °C to 10 °C | Plant tolerates down to this zone |
| RHS hardiness rating | H2 | 1 °C to 5 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 9 | −1 °C and warmer | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 5–7 | 5 °C and warmer | Plant tolerates down to this zone |
About Lemon
Lemons are not an ancient wild species but a hybrid, thought to derive from a cross between a bitter orange and a citron, and like most citrus they are grown on rootstocks chosen for disease resistance and vigour rather than on their own roots. They flower and fruit more or less continuously in mild climates, so a tree commonly carries flowers, green fruit and ripe fruit at once. Citrus are shallow-rooted and heavy feeders, and the yellowing between leaf veins that plagues them is usually a nutrient lock-up rather than a lack of fertiliser as such.
Growing notes
- Frost will damage fruit and young growth
- Heavy feeder; needs consistent moisture
Pet caution: Lemon 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.
Categories
Related plants
Cross-check Lemon against your zones