Texas sage (Leucophyllum frutescens) plants are easy-care, compact, drought-resistant and attractive bushes. Also known as Texas barometer bush, cenizo, purple sage and Texas silverleaf, these plants grow in U.S. Department of Agriculture plant hardiness zones 8 to 11. The foliage of the bushes includes silver-gray oval leaves that are soft to the touch. During summer and fall, tubular flowers in hues of pink, blue and purple bloom and provide a dramatic contrast to the plant’s shimmery leaves.