Spreading Crassula (Crassula expansa)

Spreading Crassula

Crassula expansa

Low-growing succulent with delicate star-shaped blooms, softening rock garden edges. Mat-forming perennial succulent; common name: Spreading Crassula.

Full sun
1–2/week
Beginner
🌱

Plant Needs

☀️
Sunlight Bright indirect to full sun; full sun enhances reddish leaf margins, while partial shade prevents sunscald in extreme heat
💧
Watering Allow soil to dry completely between waterings; avoid overwatering to prevent root rot, especially in cool, low-light conditions
🌡️
Temperature Thrives in 15–25°C; tolerates light frost down to 5°C, but prolonged freezing temperatures will damage foliage
🔍

Characteristics

  • Leaf: Small, fleshy, obovate to spatulate leaves arranged in opposite pairs, pale green with reddish margins under full sun
  • Flower: Tiny, star-shaped white to pale pink blooms in terminal clusters
  • Stem: Slender, trailing stems that root at nodes when in contact with soil
🛠️

Care Guide

Watering

Water thoroughly when soil is completely dry; reduce frequency during extreme heat to avoid sunscald

Fertilization

Diluted succulent-specific feed once every 6 weeks. Use a low-nitrogen, phosphorus-rich fertilizer to support bloom production

Eggshell powder topdress:Crush dried eggshells into fine powder; sprinkle lightly on soil surface, avoiding direct contact with leaves to prevent burning
Pruning
  • Trim leggy stems in spring to encourage compact, dense growth
  • Remove dead flower heads and yellowing leaves to maintain a tidy appearance
  • Thin overcrowded mats to improve airflow and reduce pest infestation risk
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic due to bufadienolides; may cause vomiting, depression, weakness, and irregular heartbeat in severe cases

Humans: Ingestion of large quantities may cause mild gastrointestinal upset including nausea and diarrhea

📖

Garden Uses & Culture

Culture: N/A

Usage: Ornamental ground cover for rock gardens, container edging, and succulent arrangements; indoor windowsill display