What about afforestation?

Afforestation is the process of establishing new forests or woodlands in areas where there was no tree cover over a long period of time, such as abandoned agricultural or industrial lands.

Every National Greening Program planting project follows a specific silvicultural prescription that is approved by a registered forestry professional. This ensures that all projects are prescribing the appropriate species mix, density, and pre- and post-planting treatments to maximize the establishment and survival potential of the trees.

Tree Canada plants seedlings of native tree species suited for each planting site to allow the ecosystem to re-establish itself or remain in its original state. Since native species are currently growing or once grew in a particular area, they are more likely to re-establish themselves and thrive than non-native species.