We like old/unusual/ varieties of tomatoes, so usually buy from obscure places...sometimes they disappear
so we DO keep seeds for many years sometimes, until we can at least grow our own to replace them. Up to now we have not stored in a refridgerator....but sealed sterilite boxes in a cool room. And seeds still grow. But using a fridge would work well I am SURE...on my MUST GET list! Thanks for the reminder...and for knowing we are not the only ones that hoarde seeds for years!