Greenhouses extend the growing season, protect plants when they are their most fragile, and open up a wider range of options for the gardener. Alas, it is not! If you plan to use your greenhouse for starting seeds, be sure to check out our Seed Starting 101 article. A greenhouse is an asset to any garden. At least that’s what I’m working towards. The winter greenhouse, equipped according to the rules, will help to produce good yields throughout the year. Do not use yellow sticky traps for greenhouse gnats. Inside my greenhouse certainly goes below freezing for dozens of nights, but leafy greens and a few others continue to do fine and grow through the winter. Use a wireless temperature transmitter to keep track of highs and lows…make sure it has an alarm to alert someone that the temperature has gone below desired temperature. Growing vegetables in a greenhouse in winter has some features that need to be taken into account; find out about them in the article. Winter Greenhouse Gardening in Canada? Enjoy your new toy! You betcha. I've never used a fan in the greenhouse. In all, we have found our greenhouse to be a very worthwhile and enjoyable investment. The best plants to grow in your greenhouse in the winter will depend on where you live, how big your greenhouse … Prevent gnats by not overwatering. Keeping your greenhouse fresh and productive through the traditionally-barren winter may seem impossible to the inexperienced, but with smart planning and the right tools you can keep your best produce coming in strong through the winter and well into the spring season. Learn about using an unheated greenhouse here. If the idea of having your own garden year round is appealing, then you definitely want to learn how to use a greenhouse in winter … Plus, a greenhouse can provide the opportunity to influence out of season growth and forced blooms to brighten even the coldest of months. I also plan to write follow-up articles on pest and disease control inside a greenhouse, along with cleaning or sanitizing tips. With a greenhouse, year-round growing is possible. In an unheated greenhouse, growing anything during the cold months of winter may seem impossible. Knowing how to use an unheated greenhouse and what plants are better suited is the key to success. This is my second year with a greenhouse for the winter months, but as we moved in September and the greenhouse was full of weeds, this is really my first year aiming for more winter vegetables. (Traps not only gnats, but spiders, ladybugs and an occasional wren.)