PlantFun
Plant Needs
Sunlight
Full sun to partial shade; thrives in bright, direct sunlight for most of the day, with light afternoon shade recommended in extreme heat
Watering
Water deeply when the top 2–3 cm of soil dries out; avoid overwatering to prevent root rot
Temperature
Cold-hardy to frigid temperatures; tolerates summer heat and drought once established
Characteristics
- Leaf: Opposite, lanceolate to ovate leaves with serrated margins; aromatic when crushed
- Flower: Dense terminal spikes of tubular blooms in shades of purple, pink, white, or orange
- Stem: Square, green to reddish-brown stems typical of the mint family
Care Guide
Watering
Keep soil consistently moist but not waterlogged; water every 3–4 days during prolonged hot spells
Fertilization
Apply a balanced granular fertilizer at planting time. Avoid over-fertilizing, as this can reduce flower production and increase leggy growth
Composted banana peel tea：Steep fully composted banana peels in water for 24 hours, dilute 1:20 with water, and apply as a root drench to support bloom developmentPruning
- Deadhead spent flower spikes regularly to encourage continuous blooming through the growing season
- Cut back stems to 10 cm above soil level in late autumn to prepare for winter dormancy
- Thin overcrowded clumps every 2–3 years in early spring to improve airflow and reduce disease risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats
Humans: Non-toxic to humans; leaves may be used in herbal preparations
Garden Uses & Culture
Culture: N/A
Usage: Ornamental pollinator plant; leaves used to make herbal teas and potpourri
