This easy grower gets up to 80 feet tall at maturity and tolerates poor soil conditions. Red Oaks are long-lived like most oaks and prefer acidic soil that is on the dry side. Showy leaves are dark green on top and contrasted with a downy tan coating on the bottom. They don’t need much pruning but if necessary, trim them in late winter or early spring. When established, Red Oaks are drought tolerant. Their acorns take two years to mature and drop and are valued by wildlife.