NARROWLEAF MILKWEED

Asclepias fascicularis

Chumash: 'uša'ak Español: Algodóncillo or Jumete

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Plant Description

Category: Shrub or small tree

Origin: Western United States

Evergreen: Winter deciduous

Flower Color: White/Cream

Bloomtime: Summer/Fall

Height: 1.7-3.3. ft

Width: 1 ft

Esposure: Full to Partial Sun

Drought Tolerant: Moderate

Irrigation: Some water in heat of summer

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Milkweeds are named for their milky, latex sap which oozes from the stems and leaves when plants are injured. The milkweed plant plays a critical role in the monarch life cycle. Monarch butterflies only lay their eggs on the underside of milkweed leaves and no other plant species. Caterpillar larvae mature and emerge from eggs after three to five days. The caterpillars feed on milkweed leaves, which provide them with a chemical defense. The larvae ingest and sequester toxins from milkweeds including the stems and leaves. These toxins protect Monarch butterflies from predation as the caterpillar becomes toxic to potential predators. Milkweed bugs, beetles, and aphids also use the plant and feed on leaves, flowers, and seeds. Milkweed stalks once the plant died back in the fall or winter.

Milkweed fiber strands are twisted together to form cordage rope. This twined fiber is used to produce nets, netting bags, feather capes, deer nets, bow strings, and other items. An interesting fact in history is that the seed floss from milkweed seedpods was used in life jackets for the U.S. Navy during World War II and as a substitute for down in pillows and comforters. It has been know to cause rashes and may be poisonous depend- ing on amount ingested.

For Additional Information About this Plant

Key to Native Plant Symbols 

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