I'm going to show you how to make a homemade wall o water!
What you’ll need:
- 1. Tomato Cage
- 2. Clear heavy duty plastic trash bag
- 3. Sealer – A vacuum sealer with the heat sealing selection will work, or even one of those old seal a meal sealers.
You’re going to start by folding your plastic bag about one third down, bringing the opening end down toward the bottom closed end and make a mark approximately one third from the top or opening. I actually took the bag, poked one of the tomato cage bottom wires through the bottom of the bag, estimated a little above the small ring where I want the bag to stop and folded the opening of the bag, up to where the fold still touched the ground.
Then turn your plastic bag, one third of the way inside out or to the mark you made.
Take your heat sealer and make vertical seals, from the fold toward the bottom and opening of the bag, about every 2-4 inches. There is no art to this, so just make them fairly even all the way around the bag.
Just to make it look a little more neat, I also sealed and removed the bag corners. This isn't necessary, but it looks a bit nicer.
Invert your tomato cage and place (upside down) over the space you are trying to heat the soil in. Note: If placing over plants, be sure to stake down the tomato cage so it won’t tip in the wind and possibly break off your tender transplant.
Once the tomato cage is in place, take the bag and with the folded side down, drape it over the inverted tomato cage. What you will be doing is creating a small greenhouse over your soil area. Take the plastic all the way down to the ground. This will cause the spike ends of the tomato cage to poke through the closed end of the plastic bag. It will also keep the plastic bag from slipping down toward the ground. Be sure to tear open the area between the wire posts. This will create a vent to allow excess heat out and not bake your transplants. Once the bag is covering the tomato cage, begin filling the sealed portion with water. When the sun shines on it in the daylight hours, it will heat up and will keep from freezing during the night and will hold the heat in.