How to Fertilize Mexican giant cactus?
Balanced feed in spring and light repeat in growth season

Mexican giant cactus · Pachycereus pringlei
Also known as: elephant cactus; Mexican giant cardon
Grow under glass in a loam-based potting compost with added extra grit. Water moderately when in growth, not at all when dormant. Apply a balanced liquid fertiliser 2 or 3 times in the growing season see houseplant cacti and succulent cultivation
Balanced feed in spring and light repeat in growth season