The ground cover plant blooms the longest is hardy geranium Rozanne, which flowers from late spring through the first hard frost in most climates. That gives you 5 to 6 months of continuous blue-violet blooms without replanting. Flower Carpet roses come in a close second with a bloom season that stretches from spring all the way through fall in zones 5 and above.
I've tracked bloom times in my garden for three seasons now. Rozanne puts on a show every single year. My plants push out their first flowers in mid-May and keep going until late October when hard frost shuts everything down. No other ground cover in my beds comes close to that kind of staying power. As the longest blooming ground cover I've tested, Rozanne earns its spot in every garden that gets at least four hours of sun.
Not all flowering ground covers perform the same way. Knowing why helps you pick the right ones. The longest blooming ground cover types share a trait called repeat blooming. They keep making new flowers all season instead of putting on one big show and quitting. Creeping phlox looks stunning for three weeks in spring but gives you nothing after that. Rebloomers like Rozanne and Flower Carpet roses keep color coming for months.
Several things affect how long your ground cover flowers last. Deadheading spent blooms tells the plant to make more flowers instead of setting seed. Your climate zone changes bloom length since warmer zones give plants more frost-free days to flower. Soil fertility matters too because plants in lean soil often bloom longer than ones in rich soil that push leaves instead of flowers. The balance between these factors determines whether you get two months of color or six.
If you live in USDA zones 9 through 11, lantana beats everything on this list because it flowers year-round in frost-free areas. For the rest of us in cooler zones, Rozanne and Flower Carpet roses give the most bang for your planting effort. Both handle zones 5 through 9 well and bounce back after winter without any coddling.
The best way to get continuous flowering ground cover across your yard is to layer different bloomers together. Plant creeping phlox for a spring burst. Add Rozanne geranium for the long summer stretch. Then put in autumn-blooming sedum for late color. This succession approach gives you flowers from April through November. Three species working together create a display that one plant alone can't match.
I set up my own succession bed two years ago with all three of these plants. The creeping phlox kicks off the show in April with bright pink flowers that last about three weeks. Rozanne takes over in May and keeps going all the way to frost. The sedum caps things off with rosy blooms in September and October. My neighbors keep asking how I get flowers for so long and the answer is simple: don't rely on just one plant.
Read the full article: 10 Best Ground Cover Plants for Any Yard
