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Arizona Milkweed

Asclepias angustifolia

Details & Attributes


Plant Type(s) Perennial
Native to Arizona Yes!
Water Needs Moderate
Sun Partial shade
Pollinators Butterflies
Has Spines No
Size
In relative feet, width by height
3 × 2
Freeze Tolerant No
Flowering Season May-August
Flower Color White
Minimum Temperature Range 10-20 °F
Leaf Description Long, narrow, and dark green
Fruit A dry capsule that stays on the stalk. Seeds are windborne on cottony plumes.
Longevity
In years
5
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Elevation Range 3500-7000 ft.
Description This is one of the most effective native milkweeds for attracting both caterpillars and mature Monarch and Queen butterflies. The caterpillars will feed on the foliage but usually not heavily enough to hurt the plant, and the butterflies will visit it for nectar and to lay their eggs. Arizona Milkweed has a limited distribution in the state, preferring moist, shaded canyons in southeastern Arizona. In cultivation this species benefits from regular supplemental irrigation, and will reward the gardener by flowering prolifically and attracting pollinators. In moist beds Arizona milkweed is prone to reseeding.