California Sycamore

Platanus racemosa

Native to:
Mexico, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Platanaceae
Genus:
Platanus
Species:
Platanus racemosa
USDA Symbol:
PLRA

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Tree
Height:
3500 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
feb,mar,apr,may

Wildlife Benefits

Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)
Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Caterpillar Keystone:
★★★★☆ Butterfly & moth species supported by this genus (NWF)

Host Plant for Caterpillars

Gelechia desiliens, Phyllonorycter felinelle, Synanthedon mellinipennis, Synanthedon resplendens, Western Tiger Swallowtail (Papilio rutulus)

Reported Fauna Sightings

Moths:London plane leaf miner (Phyllonorycter platani)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Deer Resistant:
Yes
Fall Color:
yellow, brown
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from the base and root crown after fire or mechanical damage. Thick bark provides some fire resistance.

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
Commonly found along streams and rivers

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–60 days
Notes:
Seeds require light for germination. Best sown fresh in fall or after cold stratification.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).

Source: Claude AI