Q: I am planning to enclose my portable, aluminum gazebo with 6 mil. plastic and convert it into a greenhouse for the winter. I’ll keep it on my deck, so heat from the house will help keep it warm. Will this work?

A: Even with the house nearby, you’ll have a hard time keeping the greenhouse warm enough for plants in winter. A single thickness of plastic sheet loses too much heat. You’ll need several electric heaters. If you decide to proceed despite the hassle, Charley’s Greenhouse (www.charleysgreenhouse.com) and Growers Supply (www.growerssupply.com) sell a wide array of greenhouse supplies.