Plants in containers will always be at a disadvantage when it comes to water. Without the insulating earth to protect them, their roots can dry out quickly in summer heat. Succulents and other desert plants are well adapted to hot, dry conditions, making them the default option for drought tolerant containers. But experience has taught me that many perennials, shrubs, and annuals will graciously accept a more relaxed watering schedule than the daily drench that many potted plants require. The containers on the following pages contain some of my favorites, which should need to be watered only once or twice a week, even during the hottest days of summer. A cool collection of foliage shines in the shade Siting containers out of direct sun is a great water-saving strategy; soil stays cooler, so there’s less evaporation. All of the plants in this foliage-focused grouping will thrive in your favorite shady…