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

Devil's tongue barrel cactus · Ferocactus latispinus
Also known as: candy cactus; crow's claw cactus
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