As Pacific madrone ages, it may develop thicker, plate-like scales near its base. Although intolerant of fire, some magnificent individuals found in the early part of this century in California were reported to have had diameters more than twenty feet. Today most older madrones average between 2 and 4 feet in diameter, with the largest specimens having girths of nearly ten feet. Long-lived for a broadleaf tree, Pacific madrone occasionally survive as many as 250 years.