Water ice plants frequently the first summer after planting them to help the plants develop strong roots. Once ice plants are established, they are drought tolerant, and are often used for xeriscape, or low-water, gardening. Water them every two weeks in dry conditions.
Ice plant's moisture needs vary, depending on the soil type and growing conditions. Water less frequently in clay soils and humid conditions. Water more frequently in sandy soils and dry, windy conditions. Ice plants grown in containers need more water than those grown in the ground.
Use ice plants in rock gardens or other dry areas. The plants grow only 2 inches high but may spread 36 inches, making an attractive, mat-like ground cover. The prolific yellow or orange, daisy-like flowers bloom from spring to midsummer.
Ice plants prefer slightly moist soil, but tolerate dry conditions. However, they do not tolerate soggy conditions. Amend heavy soils with compost to improve drainage. Plant ice plants in full sun in U.S. Department of Agriculture plant hardiness zones 4 to 7.