Water:
Melocactus smithii is drought-tolerant and requires thorough watering only when the soil is completely dry. During growth seasons (spring to fall), water weekly; less in winter. Use rainwater or distilled water to prevent soil compaction and avoid splashing the stem to prevent rot.
Fertilize:
During growing seasons (spring, summer, fall), fertilize melocactus smithii monthly with liquid fertilizer, avoiding winter fertilization. Consider slow-release fertilizer when repotting. Use nitrogen fertilizer for seedlings and phosphate-potassium before and after blooming, applying low concentrations to prevent damage.
Pruning:
Melocactus smithii requires careful pruning for health and shape, best done in early spring. Remove dead or damaged segments and avoid over-pruning to reduce stress. Proper techniques enhance air circulation and disease prevention. Always use clean, sharp tools for minimal damage and swift recovery.
Propagation:
Propagation of melocactus smithii involves seeding, division, and grafting. For division, cut off branches and plant them in soil to grow new shoots. For grafting, select a rootstock, cut it, place melocactus smithii at the center, and secure. After 1-2 weeks, the grafted parts unite.
