barrel cactus （ferocactus wislizenii）

agriculture america ball barrel blossom botany cactaceae cacti cactus cholla close color colorful colour colourful cultivation desert dry ferocactus flora form garden gardening genera green horticulture life live mammillaria many medicinal mexico nature north opuntia origin plant plantation plants prickly propagate propagation retention species spine spiny sponge spongy stalk succulents thorn thorny thrive tolerant tones vegetation warm water white wislizenii xerophyte xylem