What is the optimal orientation for a high tunnel?
Unlike greenhouses, orienting a high tunnel for sunlight is not as crucial. A high tunnel should be oriented in a direction that is perpendicular to the prevailing winds on your farm. Remember, all ventilation is manual, so you depend on the wind to ventilate your house. In Missouri, our winds are predominantly from the south-southwest. Thus, for spring tomato production, we find an east-west orientation to be optimal.