PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerates dry, nutrient-poor growing conditions
Watering
Water deeply only when the top 5 cm of soil is completely dry; avoid overwatering to prevent root rot
Temperature
Hardy to -10°C; thrives in temperate climates and can tolerate mild summer heat
Characteristics
- Leaf: Blue-green, linear-lanceolate leaves arranged in whorls around stems
- Flower: Small, greenish-yellow cyathia (false flowers) in terminal clusters
- Stem: Succulent, ridged stems containing milky white latex sap
Care Guide
Watering
Water when topsoil is fully dry; allow soil to dry completely between waterings
Fertilization
Diluted balanced liquid feed once monthly. Minimal fertilization is needed; avoid high-nitrogen fertilizers
Eggshell powder topdressing：Sprinkle crushed, dried eggshells around the base of the plant to boost soil calcium levels; avoid direct contact with stems to prevent irritationPruning
- Remove spent flower heads promptly to prevent aggressive self-seeding
- Trim back dead or yellowing foliage in late winter to encourage new spring growth
- Thin overcrowded clumps in early spring to improve airflow and reduce disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; contains irritant latex sap that causes oral irritation, vomiting, and diarrhea
Humans: Milky latex sap causes skin irritation; ingestion leads to oral pain and gastrointestinal distress
Garden Uses & Culture
Culture: N/A
Usage: Used as a natural gopher repellent; ornamental foliage for garden borders
