PlantFun
Plant Needs
Sunlight
Prefers full sun for abundant flowering; tolerates partial dappled shade in hot summer climates
Watering
Water deeply when the top 2–3 cm of soil feels dry; avoid waterlogging to prevent root rot
Temperature
Hardy to -15°C; tolerates warm summer temperatures up to 35°C with adequate moisture
Characteristics
- Leaf: Small, oblong, leathery evergreen leaves with smooth, entire margins
- Flower: Bright yellow, four-petaled blooms arranged in a distinct cross shape
- Stem: Slender, branching stems with reddish-brown bark on mature growth
Care Guide
Watering
Keep soil consistently moist but not saturated
Fertilization
Apply diluted balanced organic fertilizer once monthly. Use low-nitrogen fertilizer to prioritize flowering over foliage growth
Eggshell powder top-dress：Crush dried eggshells into fine powder; sprinkle 1 tsp per plant around the base; water gently to incorporate into topsoilPruning
- Remove dead or damaged stems in early spring to encourage new growth
- Trim back overgrown branches after flowering to maintain compact, rounded form
- Thin dense inner growth to improve airflow and reduce fungal disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; may cause photosensitivity, vomiting, diarrhea, lethargy, and reduced appetite
Humans: Contains hypericin; ingestion may cause mild gastrointestinal upset, and photosensitivity with excessive sun exposure after large doses
Garden Uses & Culture
Culture: Associated with St. Andrew, symbolizing faith and protection in traditional folklore
Usage: Ornamental groundcover for rock gardens, woodland borders, and native plant landscapes
