Seeds of some species can last considerably longer than a few years. For example Amaranth (pigweed) I've read can lay dormant for something like 40 years and t

Seeds of some species can last considerably longer than a few years. For example Amaranth (pigweed) I've read can lay dormant for something like 40 years and then sprout. And that's outside in native conditions. Bananas maybe not so much. Not sure.