What types of cactuses are from Mexico?

Answer 1

One type of cactus from Mexico are the epiphytic orchid [Epiphyllum spp] and rat's tail [Aporocactus spp] cactus plants. Their roots aren't used to growing in the soil. Instead, they're anchored in the air, onto trees and tree branches.

Another type is the living rock or fossil cactus [Ariocarpus spp]. It grows very slowly, and mostly underground, into cones whose tubercles are almost spineless. Its mature height may be as short as 2-4 inches/5-10 centimeters.

Still another type are the towering giant saguaro [Carnegiea gigantea] and old man [Cephalocereus spp] cactus plants. The desert native saguaro may mature to 40 feet/12 meters in height, and have a number of branching arms. It may live 150+ years. The old man cactus is a native of the seashores and mountains of subtropical and tropical Mexico. Its mature height may reach 50 feet/15 meters. Its long, silky spines look especially beardlike by the time the cactus reaches its maximum life expectancy of 200 years.

Yet another is the fish hook cactus [Ferocactus spp]. Its hooked spines intimidate predators. The sugary solution that it secretes in summer and fall attracts pollinating ants. But it brings on sooty mold when it's grown indoors. The solution must be washed off, and the flowers artificially pollinated.

Others include the branching or paddle shaped prickly pear cactus [Opuntia spp], and the top heavy Turk's cap cactus [Melocactus spp].

Answer 2

yes, as with any succulent plant it will become water bagged

Answer 3

The Saguaro.