Science · Specimen Trees
Western Sycamore
Large California native sycamore with mottled bark and lobed leaves; needs substantially more root-zone moisture than dry chaparral shrubs.
Platanus racemosa · Deciduous riparian tree
Profile
- Light
- Full sun
- Size
- Large spreading tree; unsuitable for small planting spaces
- Habitat
- Naturally associated with streams and alluvial ground
- Seasonality
- Winter leaf loss is normal; cool wet springs favor anthracnose
Water & soil targets
- Moisture (VWC)
- Site-calibrated; depends on soil texture
- Salinity tolerance
- Not reliably characterized for this catalog label; avoid saline irrigation and diagnose with soil/water testing.
- Drought tolerance
- Moderate with deep water access; limited on dry restricted urban sites.
Optimal root measurement depth
8–18 in
Most absorbing tree roots live in the upper 12–18 inches, out toward the drip line. Typical guidance; confirm with a soil probe on site.
Provide deep irrigation during establishment and dry spells when groundwater is unavailable. Maintain drainage rather than permanent stagnation.
Problems to watch
- Sycamore anthracnose
- Sycamore lace bug
- Root restriction and pavement conflict
Stress signs
- Blighted young leaves and twig tips
- Stippled bronzed leaves
- Persistent summer wilt with early leaf loss
Where you'll find it
- Large-site shade
- Riparian restoration
More specimen trees
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All Science profilesGeneral agronomic guidance and typical ranges; actual targets vary by site, soil, climate and season.