PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerates mild afternoon shade in hot, arid regions to prevent foliage scorch
Watering
Keep soil consistently moist but not waterlogged; reduce watering during winter dormancy to avoid root rot
Temperature
Hardy to USDA zones 3–9; tolerates heavy frost and mild summer heat up to 30°C
Characteristics
- Leaf: Narrow, grass-like linear leaves, bright green, forming dense, tufted clumps
- Flower: Star-shaped, pale to deep blue blooms with bright yellow centers, borne on slender upright stems
- Stem: Smooth, slender upright stems that hold terminal flower clusters above foliage
Care Guide
Watering
Keep soil evenly moist; water when the top 1 cm of soil feels dry
Fertilization
Apply diluted balanced liquid feed once monthly. Use a low-nitrogen feed to prioritize bloom production over foliage growth
Banana peel compost tea：Compost banana peels for 4–6 weeks, steep in water for 24 hours, dilute 1:20 for root drench; avoid raw peels to prevent pest infestationsPruning
- Deadhead spent blooms promptly to encourage extended flowering through early summer
- Trim back faded foliage to 5 cm above soil level after bloom to tidy clumps
- Divide overcrowded clumps in early spring to maintain plant vigor and prevent overcrowding
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA confirmed non-toxic; no reported toxic effects in cats
Humans: Non-toxic to humans; no known adverse effects from ingestion or contact
Garden Uses & Culture
Culture: N/A
Usage: Ornamental garden border plant; supports native pollinators including bees and butterflies
