Wanting to add something extremely healthy to your diet regimen? Then brown flax seeds in the shell are the way to go! To get the most health benefits out of the flax seeds, we recommend grinding them. Store flax seed in an airtight container that does not permit light to pass through the container. Store in a cool, dark, dry location away from heat. Flax seed will last several months if properly stored. Our flax seeds are non-GMO.