Hardwood trees and hemlocks occur on the slopes of the valley of Roaring Creek. Hemlocks also occur in the creek's gorge. The canopy coverage at four sites on the creek ranges from 0 percent to 75 percent. The algal biomass of the creek ranges from 0.01 to 1.21 in terms of chlorophyll a per square centimeter. The Roaring Creek Bluffs are listed on the Columbia County Natural Areas Inventory. Jeweled shooting-star, which is threatened in Pennsylvania, occurs at this site. Other plant species in this area include hydrangea, fragile fern, maidenhair spleenwort, golden saxifrage. However, several weedy plants also grow in the area.