Find Your Planting Zone
The USDA Plant Hardiness Zones offer 10 basic classifications (Zones 1 to Zone 10) to help growers decide what varieties are best suited for their environment. The zones are based on average annual minimum temperatures.
Colorado is in Zone 4 to 6. This means that some perennials that come back year after year in other Zones, are likely to freeze and die during Colorado winters. The Colorado mountains average minimum temperatures in Zone 4 are -30 to -20 F. The Colorado plains are between Zone 5 to 6 which averages -20 to 10 F.
InColor annual flowers will generally not survive Colorado winters, however InColor perennial flowers will likely survive.