Our Moss Spores are of a variety commonly termed 'Kyoto' Moss, as is prevalent at the Kyoto Gardens in Japan. The beautiful, bright green velvet appearance is weed free, since it is greenhouse grown in sterilized soil. Shelf life is indefinite, as spores are packed in a zip-lock bag within the envelope. A detailed growing guide is include in each packet. Covers up to 3 square feet. Cannot be shipped Internationally. 1/2 Ounce Net Wt. .