Melocactus zehntneri

Melocactus zehntneri possesses a spherical, green body adorned with pronounced ribs and areoles from which sharp spines emerge. This cactus showcases its unique cephalium—a tuft of wool and bristles—when mature, which serves as a specialized structure for flower development. Native to arid climates, melocactus zehntneri's morphology is a testament to its adaptation for water conservation and survival in harsh environments.

Scientific classification

Species

Melocactus zehntneri (Melocactus zehntneri)

Pinks, cacti, and allies

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Perennial

Lifespan

Succulent

Plant Type

Images of Melocactus zehntneri

Care Guide for Melocactus zehntneri

Every 3 weeks

Water

Full sun

Sunlight

20 - 38 ℃

Ideal Temperature

Water: Melocactus zehntneri is drought-tolerant, requiring thorough watering only when soil is dry. During growth seasons (spring to fall), water once or twice weekly. In winter, water weekly. Use rainwater or distilled water to avoid soil compaction from tap water, and avoid wetting the stem to prevent rot.

Fertilize: During growing seasons, fertilize melocactus zehntneri monthly with liquid fertilizer; no winter fertilization is needed. Slow-release fertilizer can be added when repotting. Use nitrogen fertilizer for seedlings and low-concentration phosphate-potassium before and after blooming; overfertilization may cause slow growth and yellowing.

Pruning: Melocactus zehntneri is a unique cactus characterized by its globular shape and cephalium. Pruning should be minimal, focusing on dead or damaged tissue, with early spring as the ideal time. Use sterilized tools, maintain air circulation, and avoid disturbing the cephalium for optimal health.

Propagation: Melocactus zehntneri propagates best through seed sowing, requiring careful seed extraction from ripe fruit. Sow seeds in well-draining soil, avoiding excess moisture to prevent rot. Ensure a warm, bright environment for germination and maintain consistent moisture until seedlings establish before resuming typical cactus care.

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