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About Narrowleaf Milkweed
- Plant Family: Asclepiadaceae
- Plant Type: Perennial
- Height by Width: 2-3'H (flower spikes to 4') x 2-3'W (sometimes spreading)
- Growth Habit: Upright, can spread by underground rhizomes to form a colony
- Deciduous/Evergreen: Winter dormant
- Growth Rate: Fast
- Sun Exposure: Full to part sun
- Soil Preference: Adaptable
- Water Requirements: Moderate
- Cold Hardy to: Winter dormant
- Flower Season: Spring
- Flower Color: White with pink
- Endangered?: Not Listed
- Distribution: Throughout California, except on immediate coast and deserts
- Natural Habitat: Disturbed sites, open areas in valleys and foothills. Host plant for Monarch butterfly.