110-120 Days to maturity. Aster alpinus. Benarys Trimix Aster Flower Seeds. Non-GMO, perennial. These classic asters will take your breath away! Brimming with blues, pinks, and whites, the large flowers are hardy and perfect for cut flower gardens. Scatter these easy germinating seeds anywhere that needs softened lines and a pop of summertime color; they even do well in pots and containers. ~1,200 seeds/oz.