All of my desert cactus get a full soak when, and only when their soil is 100% dry. Tropical cactus are watered a bit more frequently depending on their ability to store water. #planttok Calathea, 'Medallion' (Prayer Plant) Gertens Garden Center Rolling the Dice on Rare Cactus Seeds Spine City Mit Rat und Tat: Naturnahe und kologische Grabbepflanzung kostation Neugattersleben Mammillaria hahniana BBC Gardeners World Magazine