Ashitaba (Angelica keiskei)

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Sunlight Bright partial sun; tolerates light shade, avoid intense midday summer sun to prevent leaf scorch

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Watering Keep soil consistently moist but not waterlogged; avoid allowing the root zone to dry out completely

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Temperature Thrives in cool temperate conditions; protect from frost below 5°C to prevent foliage damage

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Leaf: Compound bright green leaflets with serrated edges; regrows rapidly after harvesting
Flower: Small fragrant white umbel clusters
Stem: Hollow, green to reddish; exudes distinct yellow sap when cut

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Watering

Maintain even soil moisture; water when the top 2 cm of soil feels dry

Fertilization

Apply balanced diluted liquid feed every 2 weeks. Discontinue fertilizing in autumn and winter when plant growth slows

Banana peel infusion：Chop 2-3 banana peels, steep in 1L of water for 3 days; strain solids and use the liquid as a root drench to support leaf growth

Pruning

Harvest outer mature leaves regularly to stimulate new foliage regrowth
Trim back tall flowering stems after blooming to redirect energy to leaf production
Remove yellowed or damaged foliage to improve airflow and plant appearance

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no documented adverse effects

Humans: Non-toxic; safe for culinary and medicinal consumption

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Culture: Associated with longevity in traditional Japanese folk medicine

Usage: Culinary use in salads, soups, and teas; medicinal use for digestive and immune support