Narrowleaf Milkweed (Asclepias fascicularis)**
This California native perennial is essential for western Monarch butterflies, as it's the only plant they use for laying eggs. Planting it supports their conservation.
We ship exclusively to the West Coast to ensure it's used in suitable regional gardens. Explore our full selection of milkweed varieties.
This shrubby plant reaches 2–4 feet tall, featuring fragrant, eye-catching flowers in shades from greenish-white to deep purple. Easy to grow and spread via rhizomes, it emits a sweet vanilla scent, draws in pollinators, and blooms June through August—adding vibrancy to any garden.
Also called Mexican Whorled Milkweed, it thrives in dry conditions and flowers from June to September. Low-maintenance and drought-tolerant, it establishes slowly in year one as it develops a deep taproot, then grows vigorously thereafter.
Always choose locally native milkweed species. Check varieties native to your area using the Biota of North America Program (BONAP) North American Plant Atlas range maps.
Characteristics:
- Perennial and hardy to zone 4
- Plants grow to 3-5 feet tall
- Preferred food source of Monarch butterflies
- 30 Seeds per packet
Instructions -
Sow seeds at a depth of 1/2" depth ans space seeds every 4-6", thin to 3-4'. Keep seeds evenly moist until they germinate.
Germination: 10-20 Days
Plant Outdoors: 3-4' Apart
Light: Full Sun
Firefly Farm & Mercantile may substitute seed vendors from time to time because of the availability
