Building a Greenhouse for Cool Climate Australian Gardens

Why Cool Climate Gardeners Need a GreenhouseIn Melbourne, Canberra, and Tasmania, the outdoor frost-free growing season is 5–7 months. A greenhouse extends this to effectively year-round: starting tomato and capsicum seedlings in July instead of October; growing cucumbers through winter; overwintering half-hardy subtropical plants; and producing year-round salad greens and herbs regardless of outside temperature.Size and SitingA 3 × 3m greenhouse is the minimum useful size — enough for 12�…