Trees, Parks and Nature
Our green spaces, like parks, walking trails and gardens, are vital for our environment. They help reduce unwanted impacts of climate change, support biodiversity and make our lives better. We manage trees and maintain parks and gardens.
Ontario municipalities face several concerns regarding invasive trees and plants, as these species pose ecological, economic, and social challenges.
Biodiversity and Invasive Species
We have a diverse ecosystem that is home to many plants and animals. However, invasive species can pose a threat to them and their habitats. To maintain balance, we must actively manage and prevent the spread of invasive species to protect our native biodiversity.
Invasive species
Invasive species are non-native plants, animals, or microorganisms that when introduced to a new environment, can cause harm to the ecosystem, economy, or human health. There are many different types of invasive species in our area, but the following are of particular importance. Consult the Ontario invasive species page for more details.
Wild parsnip
Beware of wild parsnip, also known as poison parsnip. It’s a growing issue in Brockville, found in roadside ditches, uncultivated areas and nature trails. Avoid it because the plant’s sap can cause skin and eye irritation, severe burns and blistering when exposed to sunlight. These blisters can cause permanent scarring and typically appear one to two days after contact with the plant.
Learn more about how to identify and the impact of the invasive species.
Threats to trees
Trees provide many benefits to the community, so it is important to keep them healthy and understand the pests and diseases that threaten them.
Spongy moth infestation
The Spongy Moth is an invasive species that threatens trees. These outbreaks occur every seven to 10 years. Each outbreak lasts three to five years. The moths primarily target oak trees but can affect other types. One caterpillar can consume many leaves. Healthy trees can recover if they receive sufficient water during droughts, but coniferous trees can suffer permanent damage with no needle regrowth.
Tree pests and diseases
The following tree pests and diseases are common in Brockville.
Tree pests:
- Aphids
- Eastern Tent Caterpillar
- Emerald Ash Borer (EAB)
- Spongy Moth
- Fall Web Worms
- Forest Tent Caterpillar
Tree diseases:
- Anthracnose
- Dutch Elm Disease
- Maple Tar Spot
For more information on how to identify and manage these threats, visit the Government of Ontario’s Forest Health webpage.