"Polycarbonate lasts 10 years or so versus two to seven years for polyethylene," says DeVore. The drawback? You can't use it to cover domed or arched greenhouses. This is the least common and most ...

Going for a design with polycarbonate panels instead of glass will also keep the weight down ... There are plenty more ideas for small spaces in our best mini greenhouses feature. Salads are some of ...