Elizabeth uses the south-facing driveway to dry her flax (and wool after washing). Having bundled the plants, it is easier to put out in the morning and retrieve in the evening. It was important to dry it at this time to prevent mold. The flax can be stored in the now-dry condition waiting further processing.
Old timers would have just let the flax dry in the fields. We, however, were dealing with lots of WV humidity and a rather hectic schedule, so we opted for the more controlled method of drying.