PlantFun
Plant Needs
Sunlight
Full sun to partial shade; performs best with at least 6 hours of direct sunlight daily to support abundant flowering
Watering
Keep soil consistently moist, as the species thrives in damp conditions; avoid allowing the root zone to dry out completely
Temperature
Hardy to -15°C, tolerates cool temperate summers and mild frosts; avoid prolonged exposure to temperatures above 32°C
Characteristics
- Leaf: Opposite lanceolate to ovate leaves with smooth margins, medium green foliage marked by tiny dark punctations
- Flower: Dense terminal spikes of star-shaped bright yellow flowers with 5 rounded petals
- Stem: Erect, unbranched green stems with fine, soft hair covering
Care Guide
Watering
Maintain consistent soil moisture; increase watering frequency during hot, dry spells
Fertilization
Apply diluted balanced liquid feed once monthly. Avoid over-fertilization, as excessive nutrients can reduce flower production
Banana peel compost tea：Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 with water for root drenching; avoid raw peels to prevent pest issuesPruning
- Deadhead spent flower spikes promptly to encourage extended blooming through late summer
- Cut back all foliage to ground level after the first autumn frost to prepare for winter dormancy
- Divide overcrowded clumps every 2–3 years in early spring to maintain plant vigor
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA-verified non-toxic to cats; no known harmful compounds
Humans: Non-toxic to humans; no reported adverse health effects from ingestion or contact
Garden Uses & Culture
Culture: N/A
Usage: Ornamental garden plant for damp areas; attracts pollinators including bees and butterflies
