Deciding when to plant garlic.
 
We want to make sure we get garlic in the ground before the ground can't be planted in. We also don't want to plant it too soon which would risk it coming up and getting frozen. If we'd planted when we should have it would almost certainly be getting bigger than we want it to right now. Sometimes (rarely) delays work out.  http://hillsidehomestead.blogspot.com/2015/12/deciding-when-to-plant-garlic.html