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Narrowleaf Milkweed

Asclepias fascicularis

Narrowleaf Milkweed (Asclepias fascicularis)

California's most widespread milkweed and a vital western monarch host, with whorled needle-like leaves and pale flower clusters. Thrives even in heavy, dry valley soils.

Family
Apocynaceae
Type
wildflower
Lifespan
perennial
Height
1–3 ft
Spacing
1–2 ft apart
Light
sun
Soil moisture
dry
Soil pH
neutral, alkaline
Bloom
June, July, August, September
Bloom colors
white, pink, green, purple
Wildlife value
monarch host, larval host, pollinators, butterflies
Landscape uses
border, erosion control, naturalizing
Native states
CA, ID, NV, OR, WA

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