Cucumbers (Cucumis sativus L.) are high yielding summer vegetables but are extremely frost-sensitive. Most vegetable growers in Iowa grow cucumbers and constantly explore ways to start the crop early in the spring. One method to extend the production season and start early production of cucumbers is using a high tunnel. A high tunnel helps protect plants from early season frost, warms the soil, increases ambient temperature, and enhances crop growth. High tunnel production is gaining popularity in the Midwest. Common vegetables grown in high tunnels include tomato, pepper, leafy greens, and cucumber.