Scarlet Milkweed
Asclepias curassavica
Scarlet Milkweed is a vibrant tropical perennial prized for its fiery orange-red blooms and its role as a host plant for monarch butterflies. It symbolizes transformation, resilience, and the vital bond between plants and pollinators.
Apocynaceae (Dogbane family)
Spring through fall in temperate climates; nearly year-round in tropical regions
Symbolism & Meanings
Key Meanings
Perfect For
Color Meanings
Similar flowers: asclepiass and cactus (prickly pear)s also share similar meanings.
Cultural Significance
Scarlet Milkweed is most powerfully associated with the monarch butterfly migration — one of nature's most iconic journeys. Its role as both a larval host plant and a nectar source makes it a symbol of the intricate, life-sustaining relationships between species. The monarch's bright orange-and-black coloring echoes the plant's own vivid palette, a reminder of how warning colors and survival intertwine in the natural world.Shop Our Floral Collection
Transform your space with our curated selection of designer floral throw pillows
Visit Full StoreBotanical Information
Physical Characteristics
Natural Habitat
Growing Guide
Sunlight
Full sun (at least 6 hours) for best growth and flowering
Water
Moderate; tolerates dry to moist soils; avoid waterlogged conditions
Soil
Well-drained, Average to fertile, Sandy, Loamy
Expert Growing Tips
Cut plants back to the ground in December in warm climates to support monarch migration patterns
Grow as an annual in zones below 8b; overwinter cuttings indoors in cooler areas
Plant in full sun for best flowering and compact growth
Monitor for orange milkweed aphids, which cluster at stem tips — avoid spraying insecticides that harm caterpillars
In non-native regions, consider replacing with native milkweed species to better support monarch butterflies
Uses & Benefits
Ornamental Uses
- Butterfly and pollinator gardens
- Cottage garden borders
- Container plantings
- Cut flower arrangements (long-lasting stems)
- Tropical-themed garden displays
Traditional Uses
- Contains cardiac glycosides (cardenolides) including asclepin and calotropin, which have been studied for potential pharmacological applications
- Traditionally used in parts of its native range as an emetic and expectorant — all plant parts are toxic if ingested in quantity
Disclaimer: Information provided is for educational purposes only. Consult healthcare professionals before using any plant medicinally.
Further Reading
Frequently Asked Questions about the Scarlet Milkweed
Is scarlet milkweed good for monarch butterflies?
It is a host plant for monarch caterpillars and provides nectar for adult butterflies, but in non-tropical climates it can disrupt migration patterns since it stays green year-round. Cutting it back in late fall or planting native milkweed species is recommended outside its native range.
Is scarlet milkweed toxic to humans or pets?
Yes — all parts of the plant contain cardiac glycosides and are toxic if ingested by humans, cats, dogs, and livestock. It can cause vomiting, heart irregularities, and other serious symptoms.
Is scarlet milkweed a perennial or annual?
It is a tender perennial in tropical zones (USDA 9–11) but is widely grown as an annual in temperate gardens. It can be overwintered indoors in cooler climates.
What does scarlet milkweed symbolize?
Scarlet Milkweed symbolizes transformation, resilience, and the beauty of interconnected life — reflecting the famous relationship between milkweed and the monarch butterfly's extraordinary migration.
Why is my scarlet milkweed covered in orange insects?
Those are milkweed aphids (Aphis nerii), which commonly cluster on milkweed stems. They rarely harm the plant seriously and can be removed by hand or with a strong water spray — avoid insecticides to protect monarch caterpillars.
When does scarlet milkweed bloom?
In temperate gardens it blooms continuously from spring through fall. In tropical climates it can flower nearly year-round. It begins blooming as early as 4 months after germination.
Available Colors
Quick Facts
Share This Flower
Explore More Beautiful Flowers
Discover other flowers with similar meanings, characteristics, or cultural significance.
Asclepias
Asclepias speciosa (and other spp.)
Asclepias, commonly known as milkweed, is essential for monarch butterfly survival and features clusters of intricate flowers. It symbolizes transformation, renewal, and hope while serving as a vital native wildflower.
Cactus (Prickly Pear)
Opuntia spp.
Cactus flowers, particularly those of Prickly Pear, produce stunning blooms in vibrant colors despite their spiny protection. These remarkable flowers symbolize endurance, protection, and the beauty that can emerge from life's most challenging circumstances.
Lantana
Lantana camara
Lantana produces clusters of small, colorful flowers that change color as they age. These heat-loving shrubs symbolize rigor and resilience.