Seed in a Blanket Planting Squares Snapdragon Mats are constructed using seed, an inert distribution media, and a water retaining polymer sandwiched between two layers of highly processed wood fibers and held together by a food grade resin. Minimum Number of seeds: 200 Germinates in 2-3 weeks Contains Six 4" x 6" seed mats - 72 planting squares Cut! Place! Water!