Red Gum is a majestic evergreen tree which reaches heights of about 130 to 180 feet. The trunk width can reach about five to seven feet in diameter.
The crown is open, widely spreading, irregular and branches tend to form not far above the ground. The bark is smooth and white, gray, buff, or brownish-red in color.
The leaves are a dull green to gray-green on both sides, about three to eight inches long, and a half inch to an inch wide. The white flowers bloom in groups of five to ten mainly in the late spring and summer and followed by small light brown seed capsules.