A special section on Christmas cactus is included. Often described as arid desert plants, they also are found in forests and on prairies. In Nebraska several native species of cactus intermingle with prairie grasses. Watering Watering properly is one of the most important factors in cactus culture. Soil mixture, containers, drainage, temperature, size of plant and type of plant all influence water use, so no absolute schedule can be given for watering.
Careful observation is the best way to determine a plant's water needs.
The soil should be thoroughly wetted at each watering, and allowed to dry before water is added again. Dormant cacti need less moisture. A light watering every few weeks is sufficient. Do not soak the soil during the dormant period. Soils Good drainage is essential in any soil mix, yet the soil mix also must have moisture retention properties, along with adequate nutrients.