A plant is considered established when it is able to get along without supplemental watering except in times of serious drought. Establishment of plants in a dry landscape requires frequent watering at first, followed by a tapering-off period. Depending on the plant, its size, and the season, establishment can take considerable time—for some plants, more than a year. Growth will be slow until roots are established. In general, large plants take longer to establish than small ones, and all plants take longer during hot, dry seasons. When you buy a plant, ask how long establishment takes, how frequently to water while the plant is still in the pot, and what watering schedule to use after the plant is in the ground. Check new plants frequently and water them if they wilt, but outside of that, do not give water in excess of the recommended schedule. Dry habitat plants, even in containers, are quite vulnerable to damage by overwatering.
—Native Florida Plants for Drought- and Salt-Tolerant Landscaping 9781561645602