Penstemon ambiguus
Penstemon, Prairie or Sand
Description
Shrub like forming a semi-woody mound to 3' May thru Sept, covered with masses of pale pink to white flowers. Narrow bright green leaves tend to drop in winter. In very cold situations, might freeze back but recovers in spring. Suited to middle desert, native to elevations from 4500-6000' on sandy or gravelly soil. In Albuquerque bloom thru summer. Tends to rot out in low desert summers. Insists on good drainage and will not tolerate over-watering. Extremely drought tolerant