Pixie lou, from what I've read on this forum many people do that. I think the important thing is to cover the pot to make a mini greenhouse. I have large water bottles that go in a water cooler that I have cut the bottoms off and I am going to use those as my "greenhouse". I wonder if a clear plastic bag over the pots would work to hold in moisture? Maybe you could make a frame to hold the bags up a little. Be sure to make holes in the bag for air. Good luck.

My husband has access to lots of catering trays at work. So I was thinking of sitting a clear dome of a catering tray on top of the container pot and taping it on to make my "greenhouse". With the smaller containers I was going to try a piece of saranwrap held on with a rubber band.

Pixie Lou,
The rubber bands are very susceptible to decay in the sun. They become brittle and break and the plastic wrap blows away. As inconvenient/messy as it seems, you're better off taping or clothes-pinning the plastic to the containers, in my experience.

Martha

Thanks Martha. I will stop saving rubber bands and now I have a use for my old plastic clothespins.

I use plastic cups to winter sow in and just stretch the cheap sandwich bags over them. I don't have to secure them with anything. When I did a bunch of different containers I used plastic and an embossing gun to shrink rap the tops then added air holes.

I sowed in gallon black nursery pots and a gallon zip lock bag fits over the top perfectly. I just cut a small hole in the top of the bag!
Joann