Bouquets of pearl oyster mushrooms (Pleurotus Ostreatus) will flourish within 2 weeks of arrival. This kit produces a surprisingly abundant crop of tasty mushrooms. We recommend inoculating your garden compost pile with this kit after use. Often gardeners can enjoy continued harvests of oyster mushrooms outdoors in the following months. (Please note that freezing is not harmful to this kit) Grows between 55 and 75 degrees F. This kit will be shipped directly from the grower. Please provide a physical address, they cannot ship to a PO Box. This patch can only be held for 1 week or less before being activated.