Catnip (Nepeta cataria)

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Sunlight Full sun to partial shade; blooms most profusely in full sun, tolerates light shade in hot climates

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Watering Water deeply when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot

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Temperature Extremely cold-hardy to -30°C; tolerates summer temperatures up to 35°C with consistent moisture

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Leaf: Heart-shaped, gray-green, fuzzy, with serrated edges and minty aroma when crushed
Flower: Small, tubular, white to pale lavender, clustered in terminal spikes
Stem: Square, hairy, branching upright growth habit

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Watering

Keep soil consistently moist but not waterlogged

Fertilization

Light, diluted organic feed once monthly. Avoid over-fertilizing to prevent leggy, sparse growth

Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle lightly on soil surface to boost calcium levels and deter slugs

Pruning

Deadhead spent flower spikes to encourage continuous summer blooming
Cut back to 10 cm above soil level in late autumn to promote dense spring growth
Thin overcrowded stems in early spring to improve airflow and reduce disease risk

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; may trigger playful, hyperactive behavior in some individuals

Humans: Non-toxic to humans; may cause mild digestive upset if consumed in large quantities

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Culture: Associated with feline enrichment; used in herbal teas for mild calming effects in humans

Usage: Ornamental garden plant, herbal tea ingredient, feline play stimulant, pollinator attractant