Narrowleaf Milkweed

Narrowleaf Milkweed is the Native West Coast species and a quintessential host plant for monarch butterflies. Perennial.

Size: Packet: 70 seeds (0.4 gram)

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Narrowleaf Milkweed is the Native West Coast species and a quintessential host plant for monarch butterflies. Perennial.

Common Name:
Narrowleaf Milkweed
Scientific Name:
Asclepias fascicularis
Plant Lifespan:
Perennial
Cold Hardiness (F):
Zone 3a (-40 to -35)
Light Requirements:
Full Sun (min. 6 hours a day)
Seed In:
Mid Winter (Jan 21 - Feb 20), Late Winter (Feb 21 - Mar 20), Early Spring (Mar 21 - Apr 20), Mid Spring (Apr 21 - May 20), and Late Spring (May 21 - Jun 20)
Seeding Depth:
1/16 in.
Days to Sprout:
7-14
Optimal Soil Temperature (F):
65-70
Plant Spacing:
1-2 ft.
Plant Height:
3 ft.

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