Asclepias Species, California Milkweed, Sierra Milkweed
Asclepiascalifornica

Family: Apocynaceae (a-pos-ih-NAY-see-ee)
Genus: Asclepias (ass-KLE-pee-us)
Species: californica (kal-ih-FOR-nik-uh)

Synonym:Gomphocarpus torreyi

Category

Perennials

Water Requirements

Average Water Needs; Water regularly; do not overwater

Sun Exposure

Full Sun

Foliage

Herbaceous
This plant is resistant to deer

Foliage Color

Bronze

Height

36-48 in. (90-120 cm)

Spacing

24-36 in. (60-90 cm)

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)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)

Where to Grow

Unknown

Danger

Parts of plant are poisonous if ingested

Bloom Color

White/Near White

Bloom Characteristics

This plant is attractive to bees, butterflies and/or birds

Bloom Size

Unknown

Bloom Time

Late Spring/Early Summer

Other details

May be a noxious weed or invasive

Soil pH requirements

6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information

Unknown

Propagation Methods

From seed; direct sow outdoors in fall
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting

Allow pods to dry on plant; break open to collect seeds