May and June
24 to 30 in.
10 to 16 in.
native to the western slope of Colorado
USDA zones 4-9
hardy to 9,500 ft.
Grand Mesa penstemon is a perennial flower native to the western slope of Colorado. It has a mat of glossy green leaves that turn orange-red in winter. In May, it produces stunning spikes of cobalt-blue flowers. It's worth planting simply for the incredible flower color.
Grand Mesa penstemon has been a beautiful bloomer at the Xeriscape Demonstration Garden. Individual plants live only for a few years, but they are worth replanting because of the stunning flower spikes.
Remove spikes of spent flowers after bloom.