Mammillaria albicoma

Mammillaria albicoma is a species of plant in the Cactaceae family. It is endemic to Mexico. Its natural habitat is hot deserts. It is threatened by habitat loss. Source - * Hernández, H.M., Gómez-Hinostrosa, C. & Goettsch, B. 2002. Mammillaria albicoma. 2006 IUCN Red List of Threatened Species. Downloaded on 22 August 2007. More

Question about Mammillaria albicoma or any cactus that grows out instead of up. Do they need a wider pot to accomodate growth? I have one that is almost touching the inside edge of the pot. More