PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerates dry, low-fertility soils with minimal competition
Watering
Water deeply when the top 2 cm of soil is dry; drought-tolerant once established
Temperature
Hardy to light frost; thrives in temperate summer temperatures between 15–25°C
Characteristics
- Leaf: Opposite, ovate to lanceolate leaves with serrated margins and soft hairy texture
- Flower: Dense terminal spikes of small pink to pale purple tubular flowers
- Stem: Square, hairy upright stems characteristic of the mint family
Care Guide
Watering
Water regularly during active growth to support flowering; avoid waterlogging
Fertilization
Optional diluted compost tea once monthly to support growth. No regular fertilization required; avoid high-nitrogen feeds that may reduce flowering
Composted eggshell tea：Crush fully dried eggshells, steep in water for 24 hours, dilute 1:10 for root drench; avoid raw eggshells to prevent odor and pest issuesPruning
- Deadhead spent flower spikes to extend the flowering period
- Remove faded foliage after the plant dies back in late autumn
- Thin overcrowded seedlings in early spring to improve airflow and growth
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no reported adverse effects
Humans: No known toxic effects for humans
Garden Uses & Culture
Culture: N/A
Usage: Traditional medicinal use for minor wound care; ornamental wildflower for pollinator gardens
