PlantFun
Plant Needs
Sunlight
Prefers partial sun to full shade; tolerates dappled woodland light and dry, sunny edges
Watering
Water deeply when top 2–3 cm of soil is dry; drought-tolerant once established
Temperature
Thrives in cool to temperate conditions; can tolerate light frost down to 5°C
Characteristics
- Leaf: Opposite, ovate to lanceolate leaves with serrated margins; dark green, slightly hairy texture
- Flower: Small, brownish-purple to greenish blooms arranged in dense terminal racemes
- Stem: Square, hollow stems with fine pubescence; green to reddish-brown in mature plants
Care Guide
Watering
Keep soil evenly moist during active growth
Fertilization
Apply diluted organic feed once monthly. Minimal fertilization needed; avoid high-nitrogen feeds
Composted eggshell powder：Sprinkle a thin layer around base; work lightly into topsoil to boost soil structure and calcium levelsPruning
- Deadhead spent flower spikes to encourage tidier growth
- Cut back stems to ground level in late autumn to promote new spring growth
- Remove yellowing or damaged foliage to maintain airflow and reduce disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: No documented toxic effects to cats per ASPCA and veterinary sources
Humans: No documented toxic effects to humans from ingestion or contact
Garden Uses & Culture
Culture: N/A
Usage: Used in traditional herbal medicine for mild anti-inflammatory properties; ornamental wildflower
