Plant Needs
Sunlight
Full sun to partial shade; tolerates cool alpine sunlight, avoid intense midday summer sun in low elevations
Watering
Water deeply when top 2–3 cm of soil is dry; avoid waterlogging, as roots are sensitive to rot
Temperature
Hardy to -10°C; prefers cool temperatures, avoid prolonged exposure above 28°C
Characteristics
- Leaf: Opposite, lanceolate to elliptical leaves with smooth margins, deep green and leathery
- Flower: Clustered terminal golden-yellow trumpet-shaped blooms, 2–5 cm long
- Stem: Erect, unbranched, hollow green stems with visible leaf nodes
Care Guide
Watering
Keep soil consistently moist but not saturated
Fertilization
Diluted balanced feed once every 4 weeks. Avoid over-fertilizing, as it can reduce flowering and weaken plant structure
Eggshell powder topdress:Crush dried eggshells into fine powder; sprinkle 1 tsp per plant around base; gently work into topsoil to avoid root disturbancePruning
- Deadhead spent blooms to encourage prolonged flowering
- Cut back stems to ground level after first frost in autumn to promote healthy regrowth
- Remove yellowing or damaged leaves throughout growing season to maintain plant health
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: Symbolizes resilience and perseverance in alpine folklore
Usage: Roots used in traditional European herbal medicine for digestive support; ornamental garden plant
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