Water thoroughly when the soil is completely dry, typically once every 2-4 weeks during the growing season (spring and summer). Reduce watering significantly in autumn and winter, allowing the soil to dry out completely between infrequent waterings to prevent root rot.

Pruning is generally not required for Ferocactus alamosanus. Remove any dead or damaged stems or flowers to maintain the plant's aesthetic appeal and prevent disease. Use clean, sharp tools for any necessary cuts.

Propagate Ferocactus alamosanus primarily through seeds. Sow seeds in a well-draining cactus mix in spring.

Alternatively, offsets can be carefully removed from mature plants, allowed to callus for a few days, and then potted in a suitable medium.

Repot your Alamos barrel cactus every 2-3 years or when it outgrows its current container. Choose a pot that is slightly larger than the current one with good drainage. Use a gritty, well-draining cactus mix.

Repot in spring before active growth begins.