Aesculus Species, California Buckeye, California Horse Chestnut
Aesculuscalifornica

Family: Sapindaceae (sap-in-DAY-see-ee)
Genus: Aesculus (ES-kew-lus)
Species: californica (kal-ih-FOR-nik-uh)

Synonym:Calothyrsus californica

Synonym:Hippocastanum californicum

Category
Shrubs
Trees

Water Requirements

Sun Exposure
Sun to Partial Shade

Foliage
Deciduous

Foliage Color

Height
12-15 ft. (3.6-4.7 m)

Spacing
20-30 ft. (6-9 m)

Hardiness
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)

Where to Grow

Danger
Seed is poisonous if ingested

Bloom Color
White/Near White

Bloom Characteristics
Flowers are fragrant

Bloom Size

Bloom Time
Mid Spring

Other details

Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information
Non-patented

Propagation Methods
From seed; direct sow outdoors in fall
From seed; stratify if sowing indoors
From seed; direct sow after last frost

Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds