Also known as Bastard Ipecacuana · Bastard Ipecacuanha · Bastard-Ipecac
Safety note: This plant may be toxic to humans and pets. See toxicity details.
Tropical milkweed (Asclepias curassavica) is a vibrant, nectar-rich perennial flower, a vital host plant for monarch butterflies and a popular garden ornamental.
At-a-glance light, water, soil, and growing conditions from plant data
High
75% intensity
Prefers full sun for best flowering and growth.
Moderate
50% intensity
Allow soil to dry slightly between waterings.
Well-drained, sandy loam
50% intensity
High
75% intensity
Thrives in warm temperatures, ideal between 20-30°C.
Moderate
50% intensity
Feed during the growing season.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | Yes 5/5 intensity |
| Toxic for pets | Yes 5/5 intensity |
| Edible | No |
Contains cardiac glycosides and other toxic compounds. Ingestion can cause nausea, vomiting, diarrhea, increased heart rate, weakness, and potentially death. Sap can cause skin irritation.
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water Asclepias curassavica regularly when the top 2-3 cm of soil feels dry. Avoid waterlogging, as this can lead to root rot. Reduce watering during cooler months or if the plant is dormant.
Ensure good drainage in pots to prevent moisture buildup.
Prune Asclepias curassavica to maintain shape and encourage bushier growth. Remove spent flowers to promote more blooms.
In regions where it can become invasive or harbor monarch parasites, consider cutting it back hard in late winter to early spring.
Propagate tropical milkweed easily from seeds sown in spring or summer, or from stem cuttings. Seeds can be sown directly into well-draining soil after the last frost. Cuttings root readily in water or moist soil.
Repot Asclepias curassavica when it becomes root-bound, typically every 1-2 years. Choose a pot only slightly larger than the current one with ample drainage holes.
Use a well-draining potting mix to ensure healthy root development.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Tropical Milkweed (Asclepias curassavica)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Gentianales |
| Family | Apocynaceae |
| Genus | Asclepias |
| Species | Asclepias curassavica |
Similar in genus Asclepias
Answers based on plant encyclopedia data
