Grafting serves the same purposes for Lophophora as for other slow-growing cacti: dramatically faster growth of seedlings, rescue of weak or rotting plants, and production of multi-headed clumps more rapidly. Common, highly compatible rootstocks include Trichocereus/Echinopsis species (San Pedro, Peruvian Torch, etc.), Harrisia jusbertii, Myrtillocactus, Hylocereus, and Pereskiopsis for micro-grafts of very small seedlings. The process is best done when both stock and scion are in active...

Grafting is a horticultural technique in which a piece of one plant (the scion—the desired Copiapoa) is joined to the root system and lower stem of another compatible plant (the rootstock) so that the vascular tissues unite and the scion grows on the stock’s roots. It is used with Copiapoa primarily to accelerate the extremely slow growth of seedlings or rare forms, to rescue damaged plants, or to produce larger specimens more quickly for collectors. Compatible rootstocks include vigorous...

Lophophora is more forgiving of a wider range of conditions than many desert cacti but still demands excellent drainage and careful watering. Outdoors in frost-free or nearly frost-free arid climates (USDA zones 9–11), plant in full to partial sun on raised, well-drained limestone-amended beds or rock gardens. Provide protection from intense midday summer sun for younger plants and from winter wet and hard freezes. Water thoroughly during the hot growing season when the soil is dry, then...