Under Bench Heat Project: Protecting Our Young Plants from Cold

In this DIY bottom heat project, we used PVC pipe and roof heating cables to put heat under the plant benches in our greenhouse. The results are that we gain around 3.5C/6.3F consistently over the overall greenhouse temperature (which is generally a few degrees above outdoor temperature, at least during the daytime). Our hope is to keep the young roots of newly propagated plants from the damage of deep cold during any uncommonly cool stretches.

While this is primarily intended as cold-weather protection, there's a good chance I'll also use the heat to "wake up" the roses early in the spring, and as overflow space in propagating roses in early summer.

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