Botanical Name:Asclepias curassavica
Common Names: Tropical Milkweed, Mexican Milkweed, Bloodflower, Butterfly Weed, Silkweed
Plant type: Herb
Zone: 9-12, all other zones as annual
Light: Sun to partial shade, best bloom in sun
Size: 36 inches
Soil: Best in rich garden soil but will grow in almost any soil
Seed ~ For long term storage of seed, keep your left-over seed in the refrigerator in a sealed baggie.
Cuttings ~ How to grow Tropical Milkweed from cuttings.
Pests: Yellow aphids, milkweed bugs, thrips, spider mites
For control of aphids, many gardeners use insecticidal soap. We found the safest and most effective
means to control aphids is Malathion. Remove any caterpillars or eggs on your plant and place in a cardboard box temporarily.
Spray your plant with Malathion according to instructions on label. Cover your plants immediately with a sheet or box. After 30
minutes, rinse your plant well with your water hose. After your plant has drip dried, replace your caterpillars on the plant. Any
eggs can be placed in a tiny (3 inch) square or circle of material or tulle. Leave the material open on both ends.
Paperclip the material (with the eggs) on the plant. When
the caterpillars hatch, they will crawl off the material to the milkweed. Malathion does not become part of the plant and
readily washes off.
Note: Host plant for Monarch, Queen
, and Soldier
Note: Plant is poisonous. Sap is extremely painful in eyes.
Note: Spider mites are a danger to your plants. If you detect tiny red spider mites or webbing, visit
Other site links for Monarch information are:
How to tell when your caterpillar is about to pupate.
How to tell when your caterpillar is about to emerge.
How to tell the difference between a Monarch and Queen chrysalis.
Ophryocystis electroskirrha; Monarch and Queen Disease
Monarch egg size
How to tell the difference between a male and female chrysalis
How to reattach a chrysalis after it falls.
How to raise butterflies from eggs, caterpillars, and/or chrysaslies.