Build a cheap min-greenhouse out of old shelving units | Brian's Science and Technology | Scoop.it
A greenhouse is great for starting off young seedlings or growing plants year-round. By utilizing transparent barriers around the greenhouse framework, solar radiation is allowed to enter the greenhouse (heating it up) while retaining heat and moisture needed for optimal plant growth. Here’s how to build a simple, and cheap, mini-greenhouse using an old shelving unit and clear polycarbonate roofing material. http://wildernessarena.com/food-water-shelter/food-food-water-shelter/farming/build-cheap-min-greenhouse-shelving-units