80-100 days. Telstar Series Mix dianthus seeds boast elegant 1-2 inch blooms of fuchsia, velvet, magenta, and white to reinvigorate any stale garden this summer. Pelleted seed. Telstar Series Mix dianthus seeds are easy to grow, heat tolerant, and irresistible to hummingbirds, butterflies, and other important pollinators. Telstar Series Mix dianthus seeds are an ideal grow to cascade from hanging baskets, planters, and window boxes. Dianthus is one of the most cultivated flowers in the entire world and Telstar Series Mix promises the boldest pinks available. 1989 AAS winner (Picotee Selection).