yellow cactus（lobivia silvestrii f.varieg）1

agriculture barrel botany cactaceae cacti cactus cholla color colorful colour colourful cultivation desert dry flora form garden gardening genera green horticulture large life live lobivia mammillaria medicinal mexico nature number opuntia plant plantation planting plants prickly propagate propagation retention silvestrii species spine spiny sponge spongy stalk succulents thorn thorny thrive tolerant usa varieg vegetation water xerophyte xylem yellow