Watering Pay particular attention to watering container plants. Because the volumes of soil are relatively small, containers can dry out very quickly, especially on a concrete patio in full sun. Daily or even twice daily watering may be necessary. Apply water until it runs out the drainage holes. On an upstairs balcony make provisions for drainage or water.
Large trays filled with coarse marble chips work nicely.
The soil should never be soggy or have water standing on top of it. When the weather is cool container plants may be subject to root rots if maintained too wet. Clay pots and other porous containers allow additional evaporation from the sides of the pots and watering must be done more often. Small pots also tend to dry out more quickly than larger ones. If the soil appears to be drying excessively fast, group the containers together so that the foliage creates a canopy to help shade the soil and keep it cooler.