Ant Plant (Hydnophytum formicarum)

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Sunlight Bright indirect light; avoid direct midday sun to prevent leaf scorching and caudex damage

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Watering Water thoroughly only when the outer caudex feels slightly soft; allow the growing medium to dry completely between waterings to prevent rot

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Temperature Thrives in consistent warm temperatures; avoid exposure to temperatures below 15°C to prevent cold stress

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Leaf: Glossy, elliptical evergreen leaves arranged oppositely on slender, green stems
Caudex: Swollen, hollow tuber with internal chambers specialized for symbiotic ant colonies
Flower: Tiny, white, tubular blooms emerging from small pores on the caudex surface

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Watering

Keep substrate slightly moist; mist caudex occasionally to boost humidity

Fertilization

Diluted, low-nitrogen feed once every 6 weeks. Avoid high-nitrogen fertilizers to prevent excessive leaf growth that may stress the caudex

Spent tea leaf compost extract：Steep fully composted black tea leaves in water for 24 hours; dilute 1:20 for root drenching to avoid nutrient burn

Pruning

Trim yellowing or damaged leaves at the base of stems to maintain plant health
Remove dead, brown stems to improve airflow around the caudex
Avoid cutting into the caudex to preserve the symbiotic ant chambers and prevent infection

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA lists no documented toxicity to cats

Humans: No known toxic compounds; safe for human handling and accidental ingestion

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Culture: Symbolizes mutualism and ecological interdependence in horticultural circles

Usage: Ornamental epiphyte for mounted displays, closed terrariums, or indoor tropical gardens