Rose Campion Seeds Foothill Gardener Cactus are here at the farm! With thousands of species of succulents and cacti found around the world, many have been cultivated into perfect, slow growing houseplants that thrive with very little care. Seed Magic: How Germination Occurs and Why It Can Fail The Coeur d'Alene Coop HOW MUCH HUMIDITY DOES SOH NEED? I misted the SOH leaves and put this plastic cup over them to increase humidity, I just don't know how long. Should I take this off? Can succulent food be used for houseplants?