San Marcos GrowersSan Marcos Growers
New User?
Wholesale Login
Enter Password
Home Products Purchase Gardens About Us Resources Contact Us
 Web Site Search
Plant Database
Search by Plant Name
  General Plant Info
Search for any word
  Advanced Search >>
Search by size, origins,
color, cultural needs, etc.
Site Map
Retail Locator
Plant Listings

PLANT TYPE
PLANT GEOGRAPHY
PLANT INDEX
ALL PLANT LIST
PLANT IMAGE INDEX
PLANT INTROS
SPECIALTY CROPS
NEW  2017 PLANTS
PRIME LIST>
  for MARCH


 Weather Station

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

[2nd Image]
Habit and Cultural Information
Category: Perennial
Family: Asclepiadaceae (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. We also grow the red and golden form called 'Silky Deep Red' This description is based on research and observations of this plant as it grows in our nursery, in our nursery garden and in other gardens that we visit. We also incorporate comments received and appreciate getting feedback of any kind from those who have any additional information about this plant, particularly if they disagree with what we have written or if they have additional cultural tips that would aid others in growing Asclepias 'Silky Gold'.