Is A Season Extender Right For You? Our collection of Season Extenders includes Coldframes and Grow Racks. All models offer a wonderful way to extend your growing season in both spring and fall. Season Extenders are ideal for the gardener with limited growing space, as they are both compact and versatile in the garden. They produce exceptional growing results without taking up too much valuable garden space. If you have a short growing season and minimal gardening space, a Season Extender is the perfect model for you! What To Look For In A Season Extender Aluminum framing is the best option for a Season Extender as it is durable, maintenance-free and lightweight. And polycarbonate is ideal for the covering of the greenhouse. For our Coldframes and Starterhouse, we’ve selected twin wall polycarbonate that is unbreakable, insulating and has a UV coating so it won’t break down over time. It also diffuses the sunlight and prevents plants from burning. Grow Racks are a great alternative to the traditional Coldframe and can be used indoors as well as outdoors. They allow more vertical growing space, which is especially attractive if you’ve got spatial constraints or are a rooftop or balcony gardener. Our Grow Racks have a UV treated cover so they won’t break down after prolonged exposure, and a reinforced zipper to allow easy access. Plus, the adjustable shelving allows more room for taller plants. Single Coldframe $119.00 Double Coldframe $179.00 Four Tier Grow Rack $59.00