SueVT said:I am also considering baking the seedling mix before use, to eliminate soil-borne gnats. Seems like a lot of bother, but the gnats last year were insane!
Last year i baked all soil EXCEPT the miracle grow seed mix i added at the last minute when I was in a rush... (purchased from Home Depot or Lowes... cant recall). The gnats stuck quickly... I'm pretty sure the commercial miracle grow was carrying eggs... which was quite a disappointment. So baking at 200 degrees for 30 mins is a good idea if you are not planting all that many seedlings... if you have tons of seedlings it can be a bit impractical... i'm staring at 2+ cubic yards of soil that I intend to use... I just do not have the will to back that much.... so I am going to water with Gnatrol every so often
