The location of your greenhouse is an important part of creating the right environment for growing your plants and maximizing the full potential of your garden greenhouse. A green house should be ideally located in a place that will get the maximum exposure to sunlight which is usually a south or southeast facing location. If your location does not provide sunlight all day but only in the morning this can be a significant amount of light for your plants to produce its food ( Photosynthesis ) allowing them to grow. The different seasons can also be a factor when finding the right location for your greenhouse as in the spring an easterly location will get the most sun exposure, the summer months will bring intense late afternoon light so plants may require shading so they do not scorch then you have the winter months where the sun is much lower in the sky. The angle of the sun changes from summer to winter and will cast any shadows from buildings or trees differently so they may shade your greenhouse at different times of the year. The only tree that will not let any light to your greenhouse will be an evergreen as they do not lose any of there leaves in the winter months for this reason it is highly recommended that you do not place a greenhouse under theses trees.