Never leave leftover seed packets outside in the garden or garage or in an unheated outdoor shed, because high humidity and dampness will ruin them. A sealed mason jar or freezer-weight ziplock bag is an ideal storage container. Keep seeds dry and in your coolest room. Plan to use them the next season.
Why do my seeds keep popping back up?
If an area is too dark, seeds will pop out. I don’t know why the other one pops out too, but you can at least try to increase the lighting. That should fix the problem.
What is Minecraft’s best seed?
Best Minecraft Seeds