California sycamore
Platanus racemosa · Platanaceae
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around california sycamore and prepare for winter.
ID card
- Common name
- California Sycamore, American Sycamore
- Foliage
- Deciduous
- Flowering
- Spring (April-May)
- Mature size
- 50 to 80 feet tall, 33 to 50 feet wide
- Growth rate
- Fast to moderate
- Hardiness
- -10 to -15 °C
- Origin
- California and southwestern United States
- Soil type
- Well-drained, fresh to moist
Care
Watering
Water regularly during the first year to establish a deep root system. Once established, the sycamore tolerates drought well thanks to its deep root structure. During extended summer periods, occasional watering promotes better growth. Favor deep watering over frequent shallow watering.
Light Exposure
Plant your sycamore in full sun for optimal growth and harmonious canopy development. It tolerates light shade but grows more vigorously in sunny situations. Good light is essential to maintain dense, healthy foliage.
Soil
The California sycamore prefers well-drained, fresh to moist soils. It adapts to various soil types, including chalky or slightly alkaline soils. Improve poor soil with compost at planting time. Avoid compacted or chronically waterlogged soils.
Pruning and Structure
Prune lightly in winter (dormant period) to remove dead, crossing, or poorly oriented branches. Encourage a single-trunk structure by removing basal shoots in the first few years. Regular, moderate pruning maintains balanced form without weakening the tree.
Fertilizing
Apply balanced fertilizer in spring during the first three years to support juvenile growth. Once well-established, the sycamore is undemanding. An application of compost or organic matter on the soil surface every two years is generally sufficient.
Diseases and Pests
The sycamore is relatively robust but may suffer from anthracnose (fungal disease causing leaf spots) in very humid climates. Watch for aphids or scale insects, especially in young years. Promote air circulation and avoid excess moisture to minimize health risks.
Did you know?
The California sycamore is closely related to the Oriental plane tree, with which it shares the characteristic bark that exfoliates in colored plaques, revealing creamy white wood. In California, it has long marked the landscapes of Spanish missionaries and remains a botanical symbol of the region.
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
- Oriental planePlatanus orientalis
- London planePlatanus hispanica
- SycamorePlatanus occidentalis
- GrapevineVitis vinifera
- CamelliaCamellia japonica
- SageSalvia officinalis
Tips generated and checked by Viridia — adapt them to your local climate.