2nd Year Maturity. Colorado Blue columbine seeds grow a spectacular all-American favorite that promises an authentic slice of the Rocky Mountains all season long. Colorado Blue is native to the temperate and shaded woodlands of Colorado and will thrive in many similar gardens. Colorado Blue seeds mature into 12-24 inch tall wildflowers bursting with "spurred" columbine blooms and promises to steal the show in any fresh cut basket, bouquet, or centerpiece. Colorado Blue columbine is versatile enough to keep indoors, on the porch, or as a classic American grow among untamed wildflower mixes.