Alpine Jewel Box: Creeping Phlox and Ice Plant Rockery
Colorado’s iconic rock garden heritage comes alive when carpet-forming perennials are allowed to cascade down stone ledges and drape over retaining walls. Combining Creeping Phlox (Phlox subulata) with Hardy Ice Plant (Delosperma) yields a living mosaic of saturated color that handles intense UV exposure with ease. In spring, Creeping Phlox opens the show, blanketing the ground in thick cushions of magenta, pale lavender, or snowy white flowers that completely obscure the needle-like foliage underneath. As spring fades into summer, various species of Delosperma—such as ‘Fire Spinner’ or ‘Table Mountain’—take center stage, unfurling neon-bright, daisy-like blossoms that reflect light like polished gemstones. Both species are master soil stabilizers, locking down sloped terrain and preventing erosion during heavy deluge thunderstorm events. They require sunny locations with gritty, fast-draining soil where water never sits around their crowns. This low-water duo turns unforgiving rock outcrops into vibrant floral tapestries that feel right at home against the dramatic backdrop of the Rocky Mountain foothills.