It contains a stand of mature eastern hemlock (Tsuga canadensis) trees, with some white pines (Pinus strobus), a combination that was once common in Quebec but has almost disappeared due to forestry and farming.

[2] The reserve covers 10.66 hectares (26.3 acres) on a terrace about 20 metres (66 ft) above sea level, formed when the ice cap receded about 12,000 years ago.

[4] 90% of the forest floor is covered by a dense layer of twigs, branches and leaves, with dead tree trunks in different stages of decomposition.

There are small patches of red-stemmed feathermoss (Pleurozium schreberi), and examples of tree groundpine (Dendrolycopodium dendroideum), shining clubmoss (Huperzia lucidula), threeleaf goldthread (Coptis trifolia) and spinulose woodfern (Dryopteris carthusiana).

The shrub layer is dominated by eastern hemlock but also includes striped maple (Acer pensylvanicum) and American beech.

[4] Surrounding the hemlock forest there is a young stand of mixed softwood and hardwood that has developed from a farm field after it was abandoned between 1965 and 1975.

In small areas where the soil is heavier it has elm, black ash (Fraxinus nigra) or staghorn sumac (Rhus typhina).