How to Fertilize Stenocactus multicostatus?
Balanced perennial feed every four weeks from spring through summer

Stenocactus multicostatus · Stenocactus multicostatus
Grow in standard cactus compost in full light with low humidity. When in growth, water moderately and apply a low-nitrogen fertiliser monthly; keep dry in winter. See houseplant cacti and succulent cultivation for further information
Balanced perennial feed every four weeks from spring through summer