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Products > Asclepias fascicularis
 
Asclepias fascicularis - Narrow-leaved Milkweed

San Marcos Growers has permanently closed as a business. This is an archived page preserved for informational use.  

 
Habit and Cultural Information
Category: Perennial
Family: Apocynaceae (Dogbanes & Milkweeds)
Origin: Northwest (U.S.) (North America)
California Native (Plant List): Yes
Flower Color: Pink
Bloomtime: Spring/Summer
Height: 2-3 feet
Width: 2-3 feet
Exposure: Full Sun
Summer Dry: Yes
Deer Tolerant: Yes
Irrigation (H2O Info): Low Water Needs
Winter Hardiness: < 0 °F
May be Poisonous  (More Info): Yes
Asclepias fascicularis (Narrow-leaved Milkweed) - An easy to grow native perennial that grows 2 to 3 feet tall by an equal width and rhizomes that spread the plant to form small stands. It has narrow mid-green 5-inch-long leaves bundled in fascicles and attractive 2 inch wide clusters of rose-pink flowers through the summer and then in late summer goes dormant to re-emerges in mid-spring.

Best planted in full sun but will grow in part sun at the sacrifice of flowers. Accepts water when given but this drought tolerant plant can be grown extremely dry and is tolerant of a wide range of soil types, including clay. In its dormant state it is hardy to winter temperatures below 0° F and useful in gardens in USDA Zones 6 through 10. This attractive plant provides food for monarch butterfly caterpillars and provides nectar for hummingbirds and nest building materials for other birds.

Asclepias fascicularis has a wide natural distribution eastern Washington, and Idaho west to Oregon and south through California and Nevada into Baja California and is generally more garden tolerant that other native milkweeds. The name for the genus was one that Carl Linnaeus ascribed after Asclepius (Asklepios), the Greek god of medicine and healing because of the many folk-medicinal uses for the milkweed plants. The specific epithet is from a Latin word 'fasciculus' meaning "bundles" in reference to the way the leaves are attached to the stem in bunches called fascicles. 

The information displayed on this page about Asclepias fascicularis is based on our research conducted about this plant from books in our nursery library as well as from information that is provided by reliable online resources. We also have included our own observations made about it as it grew in the nursery gardens and other gardens visited, as well how the crops of this plant performed in the containers when we had them in our nursery field. We also include comments received from others and welcome hearing from anyone who has information about this plant, particularly if it includes cultural information aiding others to better grow it.

 
We closed for regular business at the end of 2025 in order for the property to be developed for affordable housing.
Our gates remain closed but we will open them by appointment to interested parties as we liquidate remaining supplies and equipment.