PlantFun
Plant Needs
Sunlight
Full sun exposure; tolerates reflected coastal sunlight and salt spray
Watering
Drought-tolerant; water only when soil is completely dry; avoid overwatering to prevent root rot
Temperature
Hardy to -10°C; tolerates high coastal heat and fluctuating temperatures
Characteristics
- Leaf: Fleshy, cylindrical, spiny-tipped leaves, gray-green to blue-green
- Flower: Small, inconspicuous greenish-white flowers clustered in leaf axils
- Stem: Erect, branching, reddish-brown at maturity
Care Guide
Watering
Water sparingly when top 5 cm of soil is completely dry
Fertilization
No regular fertilization needed. Saline coastal soils provide sufficient trace nutrients for healthy growth
Eggshell powder topdressing：Sprinkle finely ground eggshells on soil surface; no dilution required to avoid altering soil salinityPruning
- Remove dead stems after flowering to reduce debris and prevent pest harborage
- Thin overcrowded seedlings to improve airflow and support upright growth
- Trim back leggy mid-summer growth to encourage bushier, more compact form
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: No known toxicity to cats
Humans: No known toxicity to humans
Garden Uses & Culture
Culture: N/A
Usage: Traditional forage for coastal livestock; dried stems used in glassmaking historically
