Care for a ponytail palm tree by planting it in well-drained soil, keeping it at a consistent temperature and placing it in a location with adequate amounts of bright light. Transplant the tree to a larger pot every two or three years, as it can grow up to 10 feet in a pot.
Plant a ponytail palm tree in a pot with cactus potting soil, and set it at a window. Only plant it outdoors if the area has a minimum temperature of 30 to 35 degrees Fahrenheit. Keep the temperature at a maximum of 75 F during the summer and 55 F during the winter.
Water the plant well only when the top several inches of soil dries out. If the plant starts to show rot on the stem, a sign of too much water, stop watering it until the rot dissipates. Decrease watering in the winter. During the growing season, feed the plant a diluted 10-10-10 liquid-fertilizer solution.
Regularly check under the leaves for signs of spider mites, mealybugs or scale. Remove them with a soap-and-water solution or spray them off with a garden hose. Regularly prune the tree's branches to increase foliage growth until the trunk's diameter exceeds 6 inches.