Mammillaria gracilis fragilis - Thimble Cactus [fragile]

Thimble Cactus (now Mammillaria vetula ssp. gracilis) (Hunt): Small pincushion cactus densely covered with white spines. It grows in prolific clusters that, if given space, can spread into a mounded mat. The stem segments fall off easily but readily re-root. It is native to Mexico and produces miniature, pale cream to pink blooms.

This cactus variety will not survive a hard frost, but if there is a risk of freezing temperatures it can be brought indoors to grow on a sunny window sill or under a grow light. Cactus need bright sunlight, great drainage, and infrequent water to prevent rot. Pick containers with drainage holes and use well-draining cactus and succulent soil with 70% to 80% mineral grit such as coarse sand, pumice, or perlite. Water deeply and wait for the soil to completely dry out before watering again.

Full Cactus Guide