The shelf life of wheatgrass seeds can vary depending on how they are stored and the specific type of seed. Generally, when kept in a cool, dry place in an airtight container, wheatgrass seeds can remain viable for one to two years. However, it is important to consider that the germination rate may decline over time, especially if the seeds are exposed to moisture or heat. For optimal results, it is advisable to use the seeds within one year of purchase.
Wheatgrasskits.com often suggests checking the packaging for an expiration date or specific storage recommendations. If you are uncertain about the viability of older seeds, you can perform a germination test by soaking a small number of seeds in water for a few hours, then placing them on a damp paper towel. After a few days, you can check for signs of sprouting to determine whether the seeds are still good for planting. Proper storage methods can help extend the shelf life and maintain the quality of the seeds for successful growth.