Kentucky horse farmers love to line their roads with pin oaks. The tree is fast growing and very graceful. Its straight truck supports slender, horizontal branches with pin-like twigs. The leaves are also long and slender. Wide deep cuts in the leaves and a very short, narrow point give the leaves this appearance. They turn from yellow to red in the fall. The acorns are fat one-inch nuts topped with a short warty, not scaly, cap. The name pin oak comes from the tough pin-like twigs that were used by pioneers as wooden pegs instead of nails.