Award-winning Nova Scotia gardener, author, and educator Niki Jabbour walks us step-by-step through how to build a cold frame with a used window sash, polysheeting, lumber, common hand tools, and some inexpensive hardware in this 4-minute tutorial from Johnny's.
For more information on 4-season gardening, visit the Season Extension section of our Grower's Library: https://www.johnnyseeds.com/season-extension-library