There are a couple of important facts to consider when choosing a site for your greenhouse. Sun or lack of, including shadows make a big impact on the success of your growing, so try to ensure your greenhouse will be in sun during winters short days to maximise your year round growing potential - see image below. Slope/Drainage, the site must be reasonably level for the greenhouse and drainage is also important to ensure you don’t end up with a heated swimming pool! Water, even if you plan on using a watering system you will still need to have a hose or water supply in close proximity to provide water for the plants in your greenhouse. It is a great idea to collect the water off the roof and channel it into a water tank or water butt with your greenhouse gutter system. Power, do you plan on using lighting or heating in your greenhouse in Winter? Wind, consider where you plan on situating the greenhouse. How exposed is the site? If it’s gusty consider building a windbreak on the prevailing side to protect your greenhouse. These can usually be easily constructed with a few fence posts and either wind break cloth, or possibly trellis… once constructed this also creates a great place to grow the beans or other similar climbing plants.