Common Milkweed (Asclepias syriaca)

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Sunlight Full sun to partial sun; requires at least 6 hours of direct sunlight daily for robust blooming and monarch caterpillar support

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Watering Water deeply when the top 5 cm of soil is dry; drought-tolerant once established, avoid overwatering to prevent root rot

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Temperature Hardy to -30°C; tolerates hot summer temperatures up to 35°C, dies back to underground roots in winter

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Leaf: Opposite, oblong-lanceolate leaves with fuzzy undersides, exude milky sap when damaged
Flower: Round clusters of pale pink to lavender star-shaped blooms with a sweet fragrance
Stem: Erect, hairy green stems that produce milky latex when cut

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Watering

Keep soil evenly moist during establishment; reduce watering once plants are mature and drought-tolerant

Fertilization

Optional diluted balanced feed once in early spring. Avoid high-nitrogen fertilizers that may reduce blooming

Composted banana peel tea：Steep fully composted banana peels in water for 24 hours; dilute 1:20 for root drench to avoid nutrient burn

Pruning

Remove dead or yellowing foliage in late fall to reduce overwintering pest habitat
Thin crowded stems in early spring to improve airflow and promote larger flower clusters
Cut back spent flower heads to prevent unwanted self-seeding if desired

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains cardiac glycosides that can cause vomiting, diarrhea, weakness, and irregular heartbeat

Humans: Contains cardiac glycosides; ingestion causes nausea, vomiting, and abdominal pain; sap may irritate skin on contact

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Culture: Symbolizes ecological stewardship and hope for monarch butterfly conservation

Usage: Host plant for monarch butterfly caterpillars; ornamental wildflower for pollinator gardens