California buckeye
Aesculus californica · Sapindaceae
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around california buckeye and prepare for winter.
ID card
- Foliage
- Deciduous
- Flowering
- Spring (April-May)
- Adult size
- 8 to 12 m tall, 6 to 10 m wide
- Growth
- Moderate to slow
- Hardiness
- Down to -12 °C (zone 8a)
- Origin
- California (United States)
- Soil type
- Well-drained, chalky or slightly acidic
Care
Sunlight
Plant your California buckeye in full sun or partial shade. A sunny location encourages more generous flowering. Once established, it tolerates hot, dry spots well.
Watering
Water regularly during the first year after planting. Once well established, it becomes very drought-tolerant and requires little watering. Reduce watering in winter.
Soil
Prefer well-drained soil, as this species dislikes waterlogged conditions. It adapts to chalky, rocky, or slightly acidic soils. No special enrichment needed in poor soils.
Fertilizing
No fertilizer is generally needed once the tree is established. A light application of surface compost in spring can support growth during the young years.
Pruning
Prune lightly after flowering to maintain a nice shape and remove dead or poorly oriented branches. Avoid severe pruning, which weakens the tree. No pruning is strictly necessary if the tree grows freely.
Diseases and pests
Generally hardy, it may occasionally be affected by scale insects or secondary pests under very stressful conditions. Excellent resistance to fungal diseases. Good drainage prevents most problems.
Did you know?
California buckeye was highly valued by Native Americans in the region, who used its seeds (toxic) in fishing rituals to anesthetize fish downstream. Today, this remarkable tree has become a symbol of California's native flora and features in many ecological restoration programs in Southern California, thanks to its exceptional drought adaptation.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
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Tips generated and checked by Viridia — adapt them to your local climate.