I'm trying to use 100% perlite to grow seeds after germination. not too successfull though. it dries out too fast and i think the seedlings aren't getting the water. one seedling died. still got one but not looking to good.
i read that a 50/50 mix of perlite and vermiculite would work better. got to fine some verm...
Perlite aerates, and vermiculite retains moisture