Test Garden Tip: Many plants that have gray or silver foliage have excellent drought tolerance. These include the santolina, lamb’s ear, lavender, and Russian sage growing in this garden. Test Garden Tip: When plants need watering, do so early in the morning or late in the day to reduce water loss from evaporation. Test Garden Tip: Confine plants that require more moisture to containers so you can target a smaller space for any extra watering instead of having to water your entire garden.