Overview
Sycamores (Platanus) are large deciduous trees native to North America, Europe, and Asia. The American Sycamore (Platanus occidentalis) and the London Plane (Platanus × acerifolia) are among the most widely planted. They are known for their peeling, multi-colored bark and impressive size.
Care Guide
Light
Full sun is best. They need plenty of light to develop their full canopy.
Water
Prefer consistent moisture, especially while young. They tolerate occasional flooding better than drought.
Soil
Adaptable to many soils but grow best in deep, moist, well-drained ground.
Space
Need plenty of room. Not suitable for small gardens because of their ultimate size and surface roots.
Leaves & Debris
Produce large leaves and seed balls that can create significant litter. Best planted where this is not a problem.
Pruning
Prune in winter to shape or remove dead wood. Avoid heavy pruning of mature trees.
Propagation
Easily grown from seed or by cuttings. London Plane is a hybrid and is usually propagated by cuttings.
Common Problems
- Anthracnose – A fungal disease that can cause early leaf drop, especially in cool, wet springs.
- Surface roots – Can lift sidewalks and make mowing difficult.
- Litter – Large leaves and fruit can be messy.
Interesting Facts
- American Sycamore is one of the largest deciduous trees in North America.
- The mottled bark is caused by the outer layers peeling away in irregular patches.
- London Plane is widely planted in cities because of its tolerance of pollution and compacted soil.
- The seed balls persist on the tree through winter and are a distinctive feature.
