Sink or float test for seeds?
I read that when saving seeds like tomato seeds one should discard all the seeds that float after fermenting them.
I was wondering if the same test would apply to seeds out of a store bought package. If you drop them in a dish of water should you discard all the ones that don't sink as not being viable? And does this apply to all seeds. I notice none of my pepper seeds sink, but it could be because they appear to have a waxy coating on them. But I do know I put eight tomato seeds in water before I planted them and six sunk and two floated. After six days of waiting only six tomato seeds sprouted. Trouble is I mixed them up when planting them and don't remember which was which. None of the pepper seeds has come up yet, but pepper seeds usually take longer than tomato seeds to sprout anyway. Anyone else ever try the sink or float test and what did you observe as far a germination?