How to Fertilize Ford's northern barrel cactus?
Balanced perennial feed every four weeks from spring through summer

Ford's northern barrel cactus · Ferocactus fordii subsp. borealis
Grow in cactus compost in a sunny position. Water moderately during the growing season and keep almost dry in winter. See houseplant cacti and succulent cultivation for further information
Balanced perennial feed every four weeks from spring through summer