Choices of specific plant varieties are very personal. Perennial gardens might include only a number of varieties of the same plant or they might, for instance, include only plants that have gray foliage and white flowers. Container-grown vegetables and flowers can dry out quickly, especially on a concrete patio in full sun. Apply water until it runs out the drainage holes. Clay pots permit additional evaporation from the sides, and watering must be done more often than when plastic pots are used.
Small pots dry out faster than large planters.
Feel the soil in containers at least once a day and twice on hot, dry days to be certain that plants are getting enough water.