North Spore Spray and Grow Kits contain a living organism, so they have a limited shelf life. The sooner you start or activate your kit the better. You don't want the fungi to run out of food! If you need to wait, you can store them in a cool, dry place out of direct sunlight or in a refrigerator for around 4 weeks. Pink Oysters don't tolerate temperatures below 40 degrees, so skip the fridge with these and instead opt for something else like a cellar, pantry, or cool porch tucked away from the sun.
All of these species used in our kits are very vigorous and viable, so after storing for a few weeks, they may start fruiting in the bag! It's no issue, but some recipients can be surprised or concerned which is why we have activation and storage recommendations.
If you're planning to buy a Spray and Grow Kit as a gift for the 2020 holiday season, our cutoff for fulfilling Spray and Grow Kit orders is the last week of November or the first week of December at the latest.