Sundrops, Fendler’s Sundrops Calylophus hartwegii fendleri Plant Form: Perennial subshrub Water Use: Low Mature Size: 1 ft. tall x 2 ft. wide Exposure: Full sun, part shade Bloom Time: Spring (Mar-May), Summer (June-Aug), Fall (Sept-Oct) Native to: Arizona, Colorado, Kansas, New Mexico, Oklahoma, Texas, Mexico Hardiness: Cold hardy to 0°F Sundrops cheer up drab spots in your garden, and quickly spread by underground rhizomes into rounded, flower-filled mounds. Masses of yellow 1-2 inch flowers appear over a long season above […]