The new adaptation is to place a Clear Plastic 1 gal or 1.5 gal jug with its bottom removed like a Glass Cloche over a second water vessel
My favorite plastic container to reuse is the 2-liter or 3-liter polycarbonate soda bottle. One little trick you can do after you cut the bottom off is to melt the edge in a hot skillet. By spinning the bottle around on the surface of a hot frying pan, you can form a reinforcing bead around the circumference of the bottom, making it a little more rigid. This is useful, because then you can drill a hole above this bead and use a tent peg of some type to keep the bottle from blowing away (which heavier glass cloches don't have a problem with).
The other nice thing about soda bottles is that they have an easy-to-open vent at the top in case you are worried about your small plant overheating on a very sunny day.
I have thought about this with one of those big pale blue plastic jugs from a.water cooler.
I worry about fresh air, dont the plants want fresh air? Especially.when.the ground.freezes?
The jug I would use no longer has a cap. Would it be.better to cut off the spout end and have a wider "roof" or to cut off the bottom and have the spout at the top? I'm thinking of protecting a happy lavender plant from winter kill.
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