San Pedro

San Pedro (Echinopsis pachanoi) grows best when its natural cycle of strong light, freely draining soil and measured watering is respected. Give it full sun. tolerates more cloud cover than most columnar cacti. Water it according to its seasonal needs: generous in summer for fast growth; keep dry in winter. Plant it in rich for a cactus — loam, sand and pumice in equal parts. A container with an unobstructed drainage hole is essential, because moisture lingering around cactus roots can quickly lead to rot. Keep its temperature needs in mind: -4 to 35°c. among the more cold-tolerant columnar cacti. During active growth, check the compost before watering rather than following a rigid calendar, since heat, light and pot size all change how quickly it dries. Reduce watering during cool or dormant periods, keep the plant well ventilated, and wait until the growing medium is dry before watering again.

Cuttings root with ease. A 30 cm column will produce a new plant in a season. Take material from healthy growth with a clean blade or tongs, then leave the cut surface in a dry, shaded place until it forms a firm callus. Set it into a dry, gritty medium and introduce water sparingly only after roots begin to develop. Young cacti are especially vulnerable to excess moisture. Use a small pot with excellent drainage, provide bright filtered light while roots establish, and move the new plant gradually into the light, temperature and watering conditions preferred by a mature San Pedro.