The Arboretum collection occupies a vast green space at the heart of the Jardin botanique. It consists of roughly 6,000 specimens of trees and shrubs, accounting for close to 800 species. Over 100 types of trees and shrubs are represented.
The Arboretum for the most part contains species native to Québec, Canada and North America, but species and cultivars from around the world that tolerate our climate are also found here, along with certain rare species and ancestral cultivars.
The collection of trees makes it possible to enjoy the metamorphoses of nature over the seasons, while maintaining its educational and scientific mission.
Some spaces are relatively unmowed, and allow for the development of pasture land. That practice is beneficial for many organisms, including pollinating insects and butterflies. The strategy is part of our efforts to reduce our greenhouse gas emissions and noise pollution while adding to the biodiversity of the site.
The Arboretum occupies over half the total area of the Jardin botanique de Montréal, covering 40 hectares, or the equivalent of 56 soccer fields.
Flowering periods of the principal groups of trees
March and April: pussy willow (Salix)
May: pear trees (Pyrus), cherry trees and plum trees (Prunus), crabapple trees (Malus), saskatoons and hawthorns (Crataegus)
Mid-May to mid-July: lilac (Syringa)
Late May to June: weigela (Weigela) and honeysuckle (Lonicera)
Early June: chestnut trees (Aesculus)
Mid-June: Robinia (Robinia)
Early July: catalpas (Catalpa)
July: lindens (Tilia)
Throughout the autumn, the trees in the Arboretum take on flamboyant hues, particularly in the maple sector.