It is late February at Little Miami Farms and that means it’s time to prune the walnut trees. We have a 3½ acre black walnut grove with over 700 trees that came with the farm when we purchased it years ago. Black walnut trees are dormant in the winter and February is the ideal time to prune so the “wounds” from pruning have a chance to scab-over before the sap begins to run as the trees awake in early spring.…