Narrowleaf Milkweed

Narrowleaf Milkweed, or Asclepias fascicularis, is a native perennial wildflower that plays a critical role in butterfly ecosystems, particularly as a host plant for the Monarch butterfly (Danaus plexippus). Native to the western United States—especially California, Oregon, Nevada, and parts of the Southwest—this species thrives in dry, sunny locations, making it ideal for xeriscaping, habitat restoration, and pollinator gardens.

With its slender, willow-like leaves and clusters of delicate pink to lavender flowers, Narrowleaf Milkweed not only adds beauty to native landscapes but also supports a broad range of beneficial insects and pollinators.

Key Benefits:

Monarch Butterfly Host Plant

• Monarch caterpillars can only feed on milkweed species, and Narrowleaf Milkweed is one of the few native types adapted to western climates.

• Supports the Monarch life cycle by providing a place to lay eggs and food for developing larvae.

Pollinator Magnet

• Its fragrant flowers attract native bees, butterflies, and other beneficial insects, helping to boost local pollinator populations.

• Blooms from late spring to early fall, providing a long-lasting nectar source during peak pollinator activity.

Drought-Tolerant and Low Maintenance

• Well-adapted to dry, open areas and low-water landscapes—ideal for restoration projects and water-wise gardens.

• Once established, requires minimal maintenance and no supplemental irrigation in most western climates.

Ecological and Restoration Value

• Commonly used in monarch conservation, wildlife corridors, and native habitat restoration.

• Deep roots stabilize soil and improve soil health, contributing to long-term ecosystem resilience.

Ideal For:

• Monarch waystations and butterfly gardens

• Native pollinator habitat and restoration projects

• Roadside, rangeland, and fire-recovery plantings

• Xeriscapes and drought-tolerant ornamental gardens

By planting Narrowleaf Milkweed, you’re not just adding a native wildflower to your landscape—you’re contributing to the preservation of Monarch butterflies and pollinator health in the western U.S. This keystone species is a vital part of creating sustainable, biodiverse habitats that support wildlife and strengthen the environment.