Beautiful patches of native woodland wildflowers, of many common and not-so-common species, are the pride of Speedwell's forests. Most of these flowers are in bloom from mid-April until mid-May. Nodding trillium, perfoliate bellwort, showy orchids, dwarf ginseng, rattlesnake plantain, wood anemone, and birdsfoot violet are species of note that flourish in this woodland. A variety of tall plants, such as Joe-pye weed, goldenrod, and spotted jewelweed, blossom in August and September in the wet meadow.
Deer, ruffed grouse, wood thrushes, veeries, and several kinds of woodpeckers live in Speedwell's forest. Hunting and fishing are allowed in the park during authorized seasons.