Horsetail Milkweed, Whorled Milkweed
Asclepias subverticillata
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Details & Attributes
| Plant Type(s) | Perennial |
| Native to Arizona | Yes! |
| Water Needs | Moderate-high |
| Sun | Full sun in higher elevations, shade in lower elevations |
| Pollinators | Butterflies |
| Has Spines | No |
| Size In relative feet, width by height |
2 × 3 |
| Flowering Season | June-September |
| Flower Color | White |
| Minimum Temperature Range | 0-10 °F |
| Leaf Description | Long and narrow |
| Fruit | A dry capsule that stays on the stalk. |
| Longevity In years |
5 |
| View on SEINet | View SEINet Entry |
| Range Map | View SEINet Range Map |
| Elevation Range | 3000-8000 ft. |
| Description | Horsetail Milkweed is absent from the low desert but thrives in wet meadows, woodlands, and disturbed areas. This species is considered the number one Monarch butterfly larval food plant in Arizona. This plant would be appropriate for higher elevation gardens or in landscapes with greywater or rain catchment at lower elevations. |
