PlantFun
Plant Needs
Sunlight
Full sun to partial sun; produces the most abundant blooms in unobstructed sunlight, and tolerates light shade in hot summer climates.
Watering
Water deeply when the top 2–3 cm of soil feels dry; avoid overwatering to prevent root rot and fungal growth.
Temperature
Thrives in 15–25°C; tolerates light frost but will die back in temperatures below -5°C.
Characteristics
- Leaf: Narrow linear to lanceolate leaves, arranged alternately along stems, medium green with smooth margins.
- Flower: Tiny chartreuse cyathia clustered at stem apices, surrounded by bright green bracts that mimic petals.
- Stem: Erect, branching stems that exude milky white sap when broken.
Care Guide
Watering
Keep soil consistently moist during active growth periods
Fertilization
Diluted balanced liquid feed every 2 weeks. Discontinue fertilization in late autumn as plant growth slows for the season.
Eggshell powder topdress：Crush thoroughly dried eggshells into fine powder; dust lightly over soil surface every 2 months to add calcium without risking root burn.Pruning
- Deadhead spent flower clusters to promote continuous blooming through the summer months.
- Trim leggy stems mid-season to maintain a compact, bushy growth habit.
- Remove yellowing or damaged foliage to improve airflow and reduce pest attraction.
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; contact with sap causes oral irritation, drooling, vomiting, and diarrhea.
Humans: Milky white sap causes mild to moderate skin and eye irritation; ingestion may lead to nausea or oral discomfort.
Garden Uses & Culture
Culture: N/A
Usage: Ornamental garden border plant; used as a cut flower filler in floral arrangements for its unique chartreuse bracts.
