Freeze

If a freeze is coming at night can you take garbage bags and cover your plants before you go to bed at night and uncover them a little before sunrise?
Richard
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yup...and you can in addition place a bucket of hot/warm water under that plastic at the same time. Next morning you should find the water cooled off, but not frozen. If you do this, place a small container/dish of water on the ground outside the plastic at teh same time. And if you do in fact have a freeze, you'll find a thin layer of ice on surface of the water in that outside container, while that water under the plastic remains ice free.
An alternative is to leave a 60 watt light burning under that plastic. Make sure you have the right extension cord if you do this.

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Uncovering them before sunrise is not required. Wait until the air temperature rises above freezing (generally just a couple of hours). THe plants will survive the lack of a couple hours of sunlight.
This process will not work indefinitely. Eventually the daytime will remain below freezing (assuming you're not in a tropical climate) and the cover will be unable to retain enough heat to keep the plant warm without having you change the hot water frequently (or use the light bulb). At that point you might as well build and heat a greenhouse for your plant or become resigned to the fact that annuals have a limited lifetime.
Lawrence Akutagawa wrote:

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