PlantFun
Plant Needs
Sunlight
Full sun to partial shade; tolerate light afternoon shade in hot, arid regions to prevent leaf scorch
Watering
Water deeply when the top 2–3 cm of soil dries out; avoid overwatering to prevent root rot and fungal growth
Temperature
Hardy to USDA zone 4; tolerate cold winter frosts and warm summer heat with adequate moisture
Characteristics
- Leaf: Lanceolate, serrated edges, emits bright lemon scent when crushed
- Flower: Dense terminal spikes of tubular purple-pink flowers; pinkish-purple bracts surround blooms
- Stem: Square, hairy, green to reddish-brown, typical of mint family plants
Care Guide
Watering
Keep soil consistently moist but not waterlogged; water 1–2 times weekly
Fertilization
Diluted balanced liquid feed every 2 weeks. Avoid over-fertilizing, as excess nitrogen can reduce flower production
Banana peel compost tea：Compost banana peels for 2 weeks, steep in water, dilute 1:20 for root drench; avoid raw peels to prevent pest infestationsPruning
- Deadhead spent flower spikes to encourage continuous summer blooming
- Cut back stems to 10 cm above soil level in late autumn after first frost
- Thin crowded stems in early spring to improve airflow and reduce powdery mildew risk
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no known adverse effects from ingestion or contact
Humans: Non-toxic to humans; safe for culinary and aromatic use
Garden Uses & Culture
Culture: Symbolizes protection and healing in some Native American tribal traditions
Usage: Aromatic herb for herbal teas, potpourri; pollinator-friendly garden plant to attract bees, butterflies, and hummingbirds
