Viewing post #668910 by tink3472

beckygardener said:

I didn't know that sand helps prevent fungus gnats from laying eggs in the potting medium. Interesting! I've wondered about those gnats. Do the gnats cause the seedlings to die? Do they cause root fungus (root rot)? I water my seedlings with H2O2 (Hydrogen Peroxide) mixed in with the water. But I always wondered if the gnats are a problem as I sometimes see them in my starter pots.

You have to pot all those seeds up when they become seedlings next, right?

Next year should be fun at the nursery!

The gnats don't cause the seedlings to die, in fact the gnats do nothing at all. Their only purpose is to lay eggs really, they really don't eat but may feed on flower nectar. It's the larvae that cause all the problems, they will eat the seedling roots which in turn kills the seedlings.

Yes in about 6 weeks or before the middle of Sept. all those seedlings will have to be potted up. But after that I won't have to do anything until after bloom season next year when I flag the keepers.