What is the recommended greenhouse orientation for locations north of 40 degrees latitude?

The recommended greenhouse orientation for locations north of 40 degrees latitude is northeast-southwest. This orientation is optimal because it allows for maximum sunlight exposure throughout the day, particularly in the winter months when the sun is low in the sky. By positioning the greenhouse in this manner, the long sides of the structure will face southeast and northwest, which captures sunlight effectively in the morning and afternoon.

This orientation also helps to mitigate the effects of harsh winds, which are often prevalent in northern climates. Plant growth can be enhanced by ensuring optimal light conditions, allowing for better photosynthesis and crop yields. The design takes advantage of the unique climatic conditions found at higher latitudes while maximizing the natural light available for plant growth.

Other orientations, such as north-south or east-west, do not provide the same level of efficiency in terms of light capture and can limit sunlight availability, especially during the shorter days of winter. Therefore, the northeast-southwest orientation is particularly effective for maximizing growth potential in these geographical areas.