Petunia Seeds - Frost Series (pelleted)98 105 days. Frost Series seeds grow a delightful, unique, and lively variation to the world famous single colored petunia. Frost petunia seeds deliver dazzling 3 4 wide bicolored blooms with an even white "picotee" lining in a signature choice of Velvet, Cherry, Fire, Blue, or Mix. Frost petunia seeds mature into hardy 12 15 mounds suitable for window boxes, hanging baskets, or for showing off outside in the flower bed. Frost Series petunia seeds