Woolly Spine Haageocereus (Haageocereus lanugispinus)

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Sunlight Full direct sunlight for 6+ hours daily; tolerate partial shade during extreme midday heat in summer

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Watering Water deeply only when the entire soil medium is completely dry; avoid standing water to prevent root rot

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Temperature Thrives in 15–30°C; protect from frost below 10°C to prevent stem damage

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Stem: Columnar, segmented, covered in dense white woolly areoles with short yellow radial spines
Flower: Tubular, pale pink to white, nocturnally blooming, up to 8 cm long
Fruit: Small, round red fleshy berry, edible when fully ripe

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Watering

Water deeply once weekly when soil is fully dry

Fertilization

Diluted cactus-specific feed once monthly. Discontinue fertilization during winter dormancy to prevent nutrient burn

Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle lightly on soil surface to supplement calcium without overfertilizing

Pruning

Remove dead or discolored stem segments to maintain plant health and appearance
Trim overcrowded offsets for propagation; allow cut ends to callus before planting
Clear debris from areoles to prevent pest infestations and improve air circulation

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic; minor skin irritation from spines may occur on contact

Humans: No systemic toxicity; minor skin irritation possible from embedded spines

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Culture: N/A

Usage: Ornamental succulent for rock gardens or container displays; ripe fruit is edible in small quantities