Giant Milkweed (Calotropis procera)

Giant Milkweed

Calotropis procera

Its waxy blooms carry a sweet, heady scent, a striking desert ornamental. Evergreen shrub; common names: Giant Milkweed, Apple of Sodom.

Full sun
1–2/week
Moderate
🌱

Plant Needs

☀️
Sunlight Requires full direct sunlight daily; tolerates intense reflected heat and prolonged dry periods
💧
Watering Water deeply but infrequently; allow the top 15–20 cm of soil to dry completely between waterings to prevent root rot
🌡️
Temperature Thrives in warm arid conditions; avoid temperatures below 10°C as it will cause leaf drop and potential dieback
🔍

Characteristics

  • Leaf: Thick, leathery oval leaves with a pale gray-green waxy coating; 10–20 cm long
  • Flower: Clusters of star-shaped creamy white to pale lavender blooms with purple centers; strong sweet fragrance
  • Stem: Succulent gray-green stems that exude toxic milky latex when cut or damaged
🛠️

Care Guide

Watering

Water every 7–10 days; reduce frequency during extreme heatwaves to prevent stress

Fertilization

Diluted balanced fertilizer once monthly. Use a low-nitrogen fertilizer to promote blooming rather than foliage growth

Eggshell powder topdressing:Crush dried eggshells into fine powder; sprinkle 1–2 tbsp around the base of the plant to boost soil calcium and improve drainage; avoid direct contact with stems
Pruning
  • Wear protective gloves to avoid latex exposure while pruning
  • Remove dead, damaged, or overgrown branches in early spring to maintain shape and improve airflow
  • Trim spent flower clusters to encourage new bloom production
  • Cut back leggy stems to promote dense, compact growth
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed toxic; ingestion causes vomiting, diarrhea, irregular heartbeat, weakness, and potential cardiac failure

Humans: Contains cardiac glycosides and toxic latex; ingestion causes nausea, vomiting, and cardiac arrhythmias; latex irritates skin and eyes

📖

Garden Uses & Culture

Culture: N/A

Usage: Ornamental garden plant; traditional medicinal uses with extreme caution due to toxicity