Propagating Columnar Cacti
There are hundreds of types of columnar cactus (Cereus, Pachycereus, Cephalocereus, etc.), ranging from the impressively tall and majestic Saguaro to smaller, cluster-growing San Pedro. These plants thrive in dry climates, need very little water, and reward growers with striking flowers. Columnar cacti are relatively simple to propagate, though the method can vary. In part 3 of this series, we’ll cover the ways to increase the number of columns in your garden and care for the parent plant after you’ve taken a cutting....