PlantFun
Plant Needs
Sunlight
Prefers partial shade to full sun; tolerates dappled woodland light and avoids intense midday summer sun
Watering
Water deeply when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot
Temperature
Hardy to -15°C; thrives in cool to temperate temperatures; prolonged heat above 28°C may cause stress
Characteristics
- Leaf: Opposite, ovate to lanceolate leaves with serrated margins; dark green, slightly hairy texture
- Flower: Dense terminal racemes of small, brownish-purple tubular blooms with protruding stamens
- Stem: Square, hairy stems with distinct swollen nodes at leaf attachment points
Care Guide
Watering
Keep soil consistently moist but not waterlogged
Fertilization
Apply diluted organic feed once monthly. Use nitrogen-balanced organic feed to support foliage and flower growth
Composted banana peel tea：Dilute fully composted banana peel infusion 1:20 with water for root drench; avoid raw peels to prevent pest infestationsPruning
- Remove spent flower spikes to encourage self-seeding and tidy growth
- Cut back dead foliage to ground level in late winter to promote new spring growth
- Thin overcrowded stems to improve airflow and reduce fungal disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: No listed toxicity to cats
Humans: No known toxic effects on humans
Garden Uses & Culture
Culture: N/A
Usage: Traditional herbal use for skin conditions; supports native pollinators like bees and butterflies
