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Christmas lights keep plants warm

By Mary Beth Breckenridge Published: February 1, 2013
christmas lights
C9 incandescent Christmas lights warm a cold frame.

I'm usually kind of snooty about people keeping their outdoor Christmas lights burning weeks after the holidays, but I'll make an exception in Greg Holdsworth's case.

Holdsworth, a contributor to Fine Gardening 's VegetableGardener.com site, wrote an article recently that recommends using incandescent Christmas lights to warm a cold frame. The lights warmed his setup 20 to 30 degrees, creating an outdoor environment warm enough to protect cold-sensitive plants from damage.

Besides, the lights looked cheery on a dreary winter night.

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