Waras' Ball Cactus (Parodia warasii)

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Sunlight Full sun to partial sun outdoors; bright indirect light indoors; avoid prolonged midday summer sun to prevent sunscald

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Watering Allow soil to dry completely between waterings; reduce watering in cool, humid conditions to prevent root rot

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Temperature Tolerates brief light frost (down to 5°C) but prefers warm, dry conditions; avoid temperatures below 0°C for extended periods

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Leaf: Modified into small, white radial spines and shorter central spines along prominent vertical ribs
Flower: Bright yellow, funnel-shaped blooms up to 5 cm wide, emerging from the cactus apex
Stem: Globular, green, with 15–25 distinct, rounded vertical ribs

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Watering

Water thoroughly when soil is completely dry; reduce frequency during extreme heat to avoid sunscald

Fertilization

Diluted cactus fertilizer applied once monthly. Use a low-nitrogen fertilizer to promote healthy rib development and flowering

Dried banana peel tea：Steep dried banana peels in filtered water for 3 days, dilute 1:20 with water, and apply as a root drench to avoid foliar burn

Pruning

Gently remove dried flower remains and dead spines to maintain a tidy appearance
Separate offset pups in early spring for propagation; use clean, sharp tools to avoid infection
Avoid cutting the main stem, as it may scar and reduce the cactus' structural integrity

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; spines may cause oral or skin irritation if chewed or handled

Humans: Non-toxic to humans; spines may cause minor skin irritation upon physical contact

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Culture: N/A

Usage: Ornamental succulent for container gardening, rock gardens, or indoor succulent arrangements