2nd Year Maturity. Spiked Gayfeather liatris seeds grow classic and delicate blooms where other flowers would wither. Spike Gayfeather seeds deliver 36-48" liatris brimming with densely blooming stalks in shades of rose and purple. Liatris is a tolerant seasonal performer ideal as a neat trim along the flower bed or as a timeless floral shop favorite that promises to add a professional charm to your summertime baskets, arrangements, and bouquets.