Service Barrie (705) 726-4242ServiceBarrie@barrie.ca
Urban forestry preventative maintenance programs include pest preparedness measures to ensure that the City of Barrie’s trees are safe and healthy.
There are several diseases and insects that affect trees. Some trees are more susceptible to certain diseases while other trees might be the preferred host for specific insects. Many of these insect populations are kept under control through natural predators and pathogens.
If populations arise to an infestation the City takes on an Integrated Management Approach. Different management techniques are used to address pest populations starting with the least harmful to the environment.
Invasive insect species to be on the lookout for in Barrie:
It's expected that 2021 will be a significant year for gypsy moth infestation in Ontario. Steps to protect trees on your property are outlined below. Related video:
How to protect your trees from Gypsy Moths.
Scrape egg masses off surfaces into soapy water to destroy them:
Helpful videos to reference:
Gypsy Moth Egg Mass Removal Source: The City of Toronto
Finding and Removing Gypsy Moth Egg MassesSource: The City of Toronto
How to Remove Gypsy Moth Egg MassesSource: The City of London
When the caterpillars are in their first instar (tiny stage) they will dispense in the wind and fall to the ground. Instinctively, they find a tree, crawl up to the canopy and begin feeding. Sticky tape can be applied around the tree trunk to prevent caterpillars from reaching the top of the tree.
Helpful video to reference:
Tree wrapping to mitigate gypsy mothsSource: The City of Grand Rapids
When the caterpillars are in the large caterpillar stage they will move down the tree during the day to seek shelter then return up the tree to feed at night. Placing burlap bands around the tree trunk provides a resting place for caterpillars which can be removed and killed.
Gypsy Moth Burlap trap for caterpillarsSource: The City of Toronto
Urban forestry staff are responsible for pest preparedness programs and monitoring on City property. Urban forestry preventative maintenance programs include pest preparedness measures to ensure that the City’s trees are safe and healthy.
Two serious threats to the health of our urban forests have been monitored by staff since 2004: the Emerald Ash Borer (Agrilus planipennis) and the
Asian Longhorned Beetle (Anoplophora glabripennis). No natural predators or control agents are known to control the populations of these two insects.
City staff monitor the populations of Gypsy Moth along with our municipal and provincial partners. Related links:
Gypsy Moth (County of Simcoe);
Gypsy Moth (Province of Ontario).
We can not eradicate Gypsy moth as it is well established throughout North America. Gypsy moth outbreaks usually occur every 7–10 years and may last for a period of 1–3 years. Gypsy moth populations naturally collapse from the NPV virus and fungal
It's expected that 2021 will be a significant year for gypsy moth infestation in Ontario. Based on a gypsy moth populations assessment from
BioForest, there are certain areas in Barrie that will experience moderate to significant levels of defoliation. The City will be acting in those high infestation areas through an Integrated Pest Management Approach, applying one of four measures outlined below in high infestation areas:
In 2006, City staff instituted a moratorium on planting Ash species on public lands in Barrie and recommended that land developers and consultants omit ash from planting on private property. As of April 1 2014, the County of Simcoe (including Barrie) has been included in the zone under regulation for EAB. Signs and symptoms of EAB-infested ash trees:
If a City tree exhibits these signs please report to Service Barrie at 705-726-4242 or
ServiceBarrie@barrie.ca. If you're concerned that your private tree is infested, staff suggest calling a certified arborist to have it inspected. There are several local tree companies with certified, licensed and insured arborists who can assess your trees and provide recommendations on the best course of action.
a) Identify specimen ash trees for treatment
b) Begin systematic removal and replacement of young ash trees on boulevards
c) Proactive planting in areas of high ash component
d) Public education on EAB
e) Begin bi-annual treatment of specimen ash
f) Systematic removals to include mature ash where integration with other programs create efficiencies (e.g. block pruning program)
g) Removal of all ash trees on a street or within a park where EAB has been discovered.
On March 26, 2012, after review of
Staff Report re Pest Preparedness, Council adopted the EAB Program, a 2-phase project expected to last 15 years. In August 2014, EAB was confirmed within
several locations in Barrie. As a result, forestry staff commenced Phase 2 of the EAB Program.
ALHB is native to China and is considered a major pest of hardwood trees in many parts of the country. Based on the Chinese experience with this insect and the infestations in the United States and Vaughan, this beetle would survive and reproduce in the hardwood forests of southern Canada.
A variety of hardwood trees serve as hosts to ALHB. In Asia, the primary hosts are
poplar (Populus) and
willow (Salix). Other hosts include;
horse chestnut (Aesculus),
mountain ash (Sorbus),
black locust (Robinia),
silk tree (Albizia),
hackberry (Celtis), and
sycamore (Platanus). All of these genera represent over 1,000 vulnerable species; the first five genera have been found to support reproducing populations in New York and Vaughan.
The ALHB infestation is considered “under control” within the Vaughan/Toronto Regulated Area, and the CFIA are monitoring the area for any further signs of its presence. However, ALHB was found in Mississauga in September 2013, prompting the CFIA to begin the process of starting an eradication program for that population. City staff continue to monitor the CFIA information provided on this pest.
It is critical to properly identify new introductions and be on the lookout for invasive species before they get established. The spread of pests and diseases cause harm to the ecosystem, economy, society, and potentially human health. If you think that you have spotted an invasive species on City property, please send photos and report location details to Service Barrie at ServiceBarrie@barrie.ca. If it's found on your own property please report on
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