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| Category: Perennial |
| Family: Apocynaceae (Dogbanes & Milkweeds) |
| Origin: Northwest (U.S.) (North America) |
| Flower Color: Pink |
| Bloomtime: Spring/Summer |
| Height: 2-3 feet |
| Width: Running |
| 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 |
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Asclepias speciosa (Showy Milkweed) - An erect stout perennial to 3 feet tall and spreading slowly by rhizomes to form an open clump. It has hairy broad oval gray-green 5 inch long leaves that are arranged in opposite pairs along the stem and topped in late spring through early summer with lightly fragrant large tight spherical clusters (umbels) of pale pinkish purple star shaped flowers that have reflexes calyces. Plant out in the open in full sun in most any soil and irrigate only occasionally to very little once established - this is a drought tolerant plant and is very hardy in its deciduous state, tolerating winter temperatures well below zero and useful down to USDA zone 4. This plant is very showy in bloom and was long used by the indigenous native American peoples for medicinal purposes and as a food source (it is considered one of the least toxic of the milkweeds). It is a food and habitat plant for the Monarch Butterfly and the flowers are attractive to hummingbirds. Showy Milkweed is native through much of western North America and in California from northern central California to the borders with Nevada and Oregon, where is grows in open clearings in mixed-evergreen and Yellow Pine forests. The name for the genus was one that Carl Linnaeus ascribed after Asklepios, the Greek god of healing, for the many medicinal uses of milkweed plants. The specific epithet is the Latin word for "beautiful" or "showy" in reference to this plants attractive flowers. Our plants from seed purchased from Seed Hunt as is the image of the plant on this page.
The information on this page is based on the research that we have conducted about this plant in the San Marcos Growers library, from what we have found on reliable online sources, as well as from observations made of our crops of this plant growing in the nursery and of plants growing in the nursery's garden and those in other gardens where we may have observed it. We also have incorporated comments received from others and welcome getting feedback from those who may have additional information, particularly if this information includes cultural information that would aid others in growing Asclepias speciosa. |
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