Pansy Seeds - Colossus Series Mix91 98 days. Colossus Series Mix pansy seeds promise delicate, convenient, and early Spring blooming to your garden when others can not. Colossus Series Mix seeds are easy to grow frost hardy pansies that thrive in a wide range of cool and well shaded North American gardens. Colossus Series Mix seeds grow a compact 8 wide dwarfed mound with stunning 4 5 blooms in a mix of bi colored petals with shades of blue, rose, violet, crimson, yellow, and white.