There are a number of environmental weeds and pest species that pose challenges to preserving Sherbrooke forest's biodiversity. A few (dis)honourable mentions in this rogue gallery are:
Cestrum (Cestrum elegans), Sycamore Maple (Acer pseudoplatanus), English Ivy (Hedera helix), Wandering Trad (Tradescantia fluminensis) Arum Lily (Zantedeschia aethiopica) and Blackberry (Rubus fruticosus) to name just a few.
Deer have also become a significant problem in Sherbrooke forest, dregrading and trampling the forest's creeklines and opening areas up to invasive weed species.
