The forest cover varies from pole-size hardwoods in the sections that were heavily logged and burned more than forty years ago to virgin pine and spruce stands.

South of the St. Lawrence County Line was owned by William Seward Webb, and was never commercially lumbered; this area was sold to New York State in 1896.

Slightly south of the St. Lawrence-Herkimer-Hamilton county marker stands what is (arguably) the largest virgin White Pine in the Adirondacks.

Extremely difficult traveling conditions remain, where crisscrossing blowdown exists, with bushes, small trees and witch-hobble grown up through.

Many white pines are standing on the Red Horse Creek, where the State Trail follows, forming a kind of double canopy in places.

Very large Yellow Birch and Black Cherries can be found in places, near Clear Lake on Covey Pond Hill.

The Middle Branch of the Oswegatchie, west of Willy's Lake and north of a private inholding at Bear Pond is not canoeable.

This distinction was lost when northern pike were apparently introduced accidentally or otherwise into Cranberry Lake several years ago, with adverse impacts to the brook trout population.

The East Branch of the Oswegatchie is a fine canoeing stream and is used as such to reach interior wilderness points of interest.