Spicebush, with its pleasantly scented leaves, and bladdernut, with its inflated fruits, are the chief shrubs. One bladdernut growing here is certainly among the largest of its kind in the world, having a trunk diameter of six inches. Missouri ironweed, zigzag goldenrod, arrow leaved blue aster, and late boneset provide a second wave of blossoms in autumn. Upland woods contain red mulberry, slippery elm, white ash, and wild black cherry. Black oak, red oak, chinquapin oak, bitternut hickory, and pignut hickory are common near hill summits, where the driest conditions prevail.
Few plants flower in the upland woods during the summer, although lopseed is fairly common.