Best Native Wildflowers to Grow in Colorado
Colorado spans USDA Zones 3–7, typically Zone 5. We've broken out 88 native wildflower varieties by zone — pick your zone below or find the right varieties for your specific part of the state.
Varieties
88
for Colorado
USDA
Zones 3–7
120–210 days season
Beginner
79
easy to grow
Heirloom
21
heritage varieties
Colorado in USDA Zones 3–7
Colorado spans Zones 3–7. Variety lists below are organized by zone — start with your zone for the most accurate recommendations.
Growing Native Wildflowers in Colorado
Zone 5 offers an excellent sweet spot for native wildflower gardening, with a generous 155-day growing season that allows most perennial wildflowers to establish strong root systems before winter. The moderate climate provides enough chill hours for proper seed stratification while avoiding the extreme temperature swings that stress plants in harsher zones. However, the April 30th average last frost means you'll need to be patient with warm-season annuals, and the October 5th first frost requires strategic planning for late-blooming varieties.
When selecting native wildflowers for Zone 5, prioritize varieties that can handle temperature fluctuations and establish quickly once soil warms. Look for plants with strong cold tolerance that won't be damaged by unexpected late spring frosts, yet can also withstand occasional summer heat waves. The key is choosing a mix of early, mid, and late-season bloomers to maximize your growing window and provide continuous habitat for pollinators throughout the entire season.
Zone 5 Native Wildflowers for Colorado★ Most of CO
87 varieties · Last frost April 30 · 155-day season
Zone 4 Native Wildflowers for Colorado
79 varieties · Last frost May 10 · 135-day season
Zone 6 Native Wildflowers for Colorado
88 varieties · Last frost April 15 · 180-day season
Zone 3 Native Wildflowers for Colorado
52 varieties · Last frost May 15 · 120-day season
Zone 7 Native Wildflowers for Colorado
87 varieties · Last frost April 1 · 210-day season
Zone 5 Growing Tips for Colorado
Start cold-hardy perennials like Wild Columbine, Purple Coneflower, and New England Aster from seed indoors 8-10 weeks before your last frost date (mid-February to early March). These can be transplanted outside 2-3 weeks before the last frost since they tolerate light freezes. Warm-season varieties like Butterfly Weed and Bee Balm should wait until soil temperatures consistently reach 60°F, typically mid to late May in Zone 5.
Direct seeding works well for many Zone 5 natives, but timing is crucial. Sow cold-season varieties like Wild Blue Phlox and Wild Ginger in early April, even if there's still frost risk. For heat-lovers like Blanket Flower and Black-Eyed Susan, wait until after Memorial Day when soil is truly warm. Many of these wildflowers benefit from fall seeding (September-October) to take advantage of natural winter stratification, which often produces stronger plants than spring-sown seeds.