Asclepias Subulata

Description

Asclepias Subulata, also known as Rush Milkweed, is a perennial plant species native to the southwestern United States and northern Mexico. It belongs to the Apocynaceae family and is widely grown for its ornamental value and as a food source for butterflies and hummingbirds.

Taxonomic Information

Appearance

Asclepias Subulata grows up to 3 feet tall and 2 feet wide. It has thin, pointed leaves that are about 1 inch long and 1/8 inch wide. The flowers are small and pink or lavender in color, and they appear in clusters from June to September. The seeds are held in pods that split open when ripe, releasing fluffy white seeds that are carried by the wind.

Care Guide

Asclepias Subulata requires well-draining soil and full sun exposure. It is drought tolerant once established but requires regular watering during the first growing season. Fertilize with a balanced fertilizer in the spring. This plant is hardy in USDA hardiness zones 8 to 11.

Common Pests & Diseases

Asclepias Subulata is generally pest and disease-free. However, it is susceptible to aphids, spider mites, and whiteflies. These pests can be controlled with insecticidal soap or neem oil. Root rot can occur in poorly drained soil, so make sure the soil is well-draining.

Habitat

Asclepias Subulata is native to dry, rocky slopes and canyons in the southwestern United States and northern Mexico. It is often found growing alongside other desert plants such as cacti and agave.

Question and Answer

Q: Is Asclepias Subulata poisonous?

A: Yes, all parts of the plant contain cardiac glycosides that can be toxic if ingested.

Q: Does Asclepias Subulata attract butterflies?

A: Yes, Asclepias Subulata is a host plant for monarch and queen butterflies.

Q: How often should Asclepias Subulata be watered?

A: Water Asclepias Subulata deeply once a week during the first growing season, then reduce watering to once every two weeks or as needed.

Q: Can Asclepias Subulata be grown in containers?

A: Yes, Asclepias Subulata can be grown in containers as long as the soil is well-draining and the container is large enough to accommodate the plant’s root system.

Related Plants

• Asclepias Tuberosa
• Asclepias Incarnata
• Asclepias Curassavica

References

• “Asclepias Subulata.” Lady Bird Johnson Wildflower Center. University of Texas at Austin, n.d. Web. 29 June 2021.
• “Rush Milkweed.” High Country Gardens. American Meadows, n.d. Web. 29 June 2021.
• “Asclepias Subulata.” Gardening Know How. N.p., n.d. Web. 29 June 2021.