Dragon Fruit Cactus (Hylocereus undatus)

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Sunlight Full sun to partial shade; requires 6+ hours of direct sun for fruiting; tolerate bright indirect light indoors

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Watering Allow soil to dry completely between waterings; avoid overwatering to prevent root rot in poorly drained soil

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Temperature Thrives in warm, subtropical temperatures; protect from frost below 10°C to prevent stem damage

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Stem: Flat, triangular, green succulent stems with small aerial roots for climbing
Flower: Large, fragrant white blooms with yellow stamens; up to 30 cm wide, opening only at night
Fruit: Oval red/pink fruit with green scales; fleshy white interior with edible black seeds

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Watering

Water when top 5 cm of soil is dry; increase frequency during hot, dry weather

Fertilization

Apply diluted cactus fertilizer every 4 weeks. Use low-nitrogen fertilizer to promote flowering and fruiting

Eggshell powder top dressing：Crush dried eggshells into fine powder; sprinkle lightly on soil surface; avoid direct contact with stems to prevent rot

Pruning

Remove damaged, yellowed, or dead stems in early spring to improve airflow
Trim overgrown stems to maintain desired shape and encourage new growth for fruiting
Prune after harvest to remove spent fruiting stems and redirect energy to new growth

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats; no known adverse effects

Humans: Non-toxic to humans; fruit is edible and widely consumed

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Culture: Symbolizes good fortune and abundance in some Southeast Asian cultures; often grown for decorative and edible purposes

Usage: Edible fruit production; ornamental night-blooming cactus for gardens and indoor displays