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Products > Asclepias curassavica 'Silky Gold'
Asclepias curassavica 'Silky Gold' - Golden Butterflyweed

Note: This plant is not currently for sale. This is an archive page preserved for informational use.  
Image of Asclepias curassavica 'Silky Gold'
[2nd Image]
Habit and Cultural Information
Category: Perennial
Family: Apocynaceae (Dogbanes & Milkweeds)
Origin: South America
Flower Color: Golden
Bloomtime: Summer
Height: 3-4 feet
Width: 2-3 feet
Exposure: Sun or Shade
Deer Tolerant: Yes
Irrigation (H2O Info): Medium Water Needs
Winter Hardiness: 10-15 F
May be Poisonous  (More Info): Yes
Asclepias curassavica 'Silky Gold' (Golden Butterflyweed) - This is an all yellow form of the typically orange and yellow Butterfly Weed, also known as Tropical Milkweed, a tender evergreen perennial is prized for attracting butterflies, particularly the Monarch Butterfly, into the garden. Growing 3 to 4 feet tall by as wide this plant has narrow 6 inch long yellow-green lance-shaped leaves. The flowers, appearing in late spring to late fall, are on long stems bearing 3 to 4 inch long clusters of golden-yellow flowers that like others in this family not only have a calyx row of 5 sepals and above this the corolla of 5 petals but also and additional of appendages covering the stamens called a corona. On this cultivar all of the petals and corona are a deep golden yellow. The flowers are followed by 3 inch long spindle-shaped seedpods that produces viable seed - this plant readily self-seeds to perpetuate itself within the garden. Plant in full sun in a well-drained soil and give occasional to regular irrigation. Although tender to frost this plant is root hardy to at least 15 F. Mulch if gardening in climates experiencing harder frosts or keep in a container that can be brought indoors in colder climates. A good plant mixed with other tall perennials and the long stems are excellent for cutting. Cut back in the fall after all caterpillars are gone (often left leafless by them) but be wary of the milky sap, which can cause irritation and injury to eyes and is poisonous if ingested. An excellent butterfly nectar plant and attracts Monarch butterflies as an egg laying host as it is the sole food source for Monarch caterpillars (don't remove those fantastic large-horned, black and yellow-striped caterpillars). This species is native to South America but has become a naturalized weed in tropical and subtropical pastures, fields and disturbed areas throughout the world, including central and southern Florida. 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 means of Curacao (Dutch Antilles) in reference to its origin from this South American location. Other common names include Bloodflower, Swallow-wort, Hierba de la Cucaracha, Mexican Butterfly-weed, Scarlet milkweed, and Wild Ipecacuanha. Habitat loss in both the United States and Mexico remains the biggest threat to the Monarch Butterfly but recent studies indicate that native wilkweeds, such as Asclepias speciosa, are likely a more healthy food source for monarch populations as the leaves of the native species are less likely to spread a protozoan parasite called Ophryocystis elektroscirrha. The native milkweeds also do become a year-round food source like the tropical ones, so encourage migration, which helps control the disease because butterflies infected by the parasite are so weakened that they are not able to complete the migration journey and so do not spread it to other healthy ones. . For this reason we not still grow this species or the two named cultivars we previously did, this one and the all red form called 'Silky Deep Red'

Information about Asclepias curassavica 'Silky Gold' displayed on this page is based on our research about it conducted in our library and gathered from reliable online sources. We include observations made of this plant as it grows in our nursery gardens and in other gardens that we have visited, as well as how the crops have performed in containers in our own nursery field. We will also incorporate comments that we receive from others about this plant when we feel it adds information and particularly welcome hearing from anyone who has any additional cultural recommendations that would aid others in growing it.