Is there a hot, dry spot in your garden where plants don't seem to thrive? Maybe Texas Primrose aka Texas Sundrops (Calylophus drummondianus) is worth a try. Native to the southwestern plains, it not only tolerates hot arid locations, but grows well in them. Intense yellow buttercup flowers appear on a low mound of gray-green grassy like foliage from spring into summer and then again in fall. It grows to about 6 inches tall and spreads a foot or more. The blossoms on Texas Primrose open in the evening and stay open through the next day. Deadheading and occasional watering will help keep these Sundrops compact and promote flowering. Use this plant in rock gardens, edging or groundcover in dry areas, or in a wildflower meadow setting.