Bloodflower Milkweed (Asclepias curassavica)

Bloodflower Milkweed

Asclepias curassavica

Its fiery orange blooms feed monarch butterflies, a vibrant pollinator haven. Herbaceous perennial; common names: bloodflower, tropical milkweed.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial sun; thrives in bright, direct sunlight for optimal blooming
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Watering Water deeply when the top 2 cm of soil is dry; tolerate short periods of drought
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Temperature Prefers warm temperatures; avoid frost, maintain minimum 10°C in winter to prevent dieback
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Characteristics

  • Leaf: Lanceolate, opposite, glossy green leaves up to 15 cm long.
  • Flower: Clusters of orange-red star-shaped blooms with yellow hoods.
  • Stem: Erect, hairy stems exude milky sap when broken.
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Care Guide

Watering

Keep soil consistently moist but not soggy; water 1-2 times weekly

Fertilization

Diluted balanced fertilizer every 2 weeks. Discontinue fertilization in autumn and winter when growth slows

Banana peel compost tea:Compost banana peels for 2 weeks, steep in water, dilute 1:20 for root drench to support blooming and healthy foliage
Pruning
  • Deadhead spent blooms regularly to encourage continuous flowering throughout the growing season
  • Cut back stems to 15 cm in late winter to stimulate new, bushy growth in spring
  • Remove yellowing or damaged leaves to maintain plant health and improve airflow
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains cardiac glycosides that disrupt heart function

Humans: Milky sap may cause mild skin irritation; ingestion leads to oral pain and gastrointestinal upset

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Garden Uses & Culture

Culture: Valued as a critical host plant for monarch butterfly caterpillars

Usage: Pollinator garden plant; cut flower for floral arrangements