If you do gardening in cooler climates you know how limited the production time can be for your plants. One way to extend your gardening season is to put your plants inside a cold frame where the warmth will keep them safe from the frost. The mini greenhouse lets you foster seedlings in early spring and keep veggies going through fall and even into winter.
This step by step tutorial will walk you through making a protective box using just rot-resistant planks and a salvaged window to extend the growing season:
