City of Hamilton to Spend $2-Mil in 2022 for LDD Moth Aerial Spraying

Hamilton City Council is expected to approve $3-million to hire Zimmer Air Services Inc. To provide aerial spraying to control LDD moth outbreaks in 2022 and 2023.

The City hopes to prevent damage to the City’s tree canopy similar to last year’s significant outbreak caused by the nuisance moths previously referred to as gypsy moths.

City forestry staff write airborne treatments are needed to prevent the “significant and repeated defoliation of the many tree species [that] will likely result in mortality.”

City forestry staff state egg mass surveys conducted in the fall of 2021 found nearly 50% of the tree plots surveyed contained a concentration of LLD moth eggs exceeding 2500 per hectare.

The $3-million will be funded from reserve funds instead of being added to the 2022 and 2023 operating budgets.

Aerial spraying will be conducted in six plots across the City using a helicopter. The map is below:

HANDOUT / City of Hamilton

Map showing when LDD moth control aerial spraying will be conducted in six plots across the City using a helicopter in 2022

Spraying is expected to occur between May 15 and June 15, prior to 7:30 am on any given day, dependent upon weather conditions.

The City of Hamilton says it will provide public notifications prior to spraying.

The staff report can be read here.

7 thoughts on “City of Hamilton to Spend $2-Mil in 2022 for LDD Moth Aerial Spraying

  1. Thank you for spraying to end caterpillar infestation…I lived in North Bay for several years and the yearly caterpillar infestation was gross..you could hear them at night chewing the leaves on the trees and falling on people and cars ..
    ….the city would not spray and I am sure it deterred campers and vacationers..
    Dont stop spraying..thank you again

  2. I cannot open the map to see where Plot 2 falls. We are located on 8th Concession East, Carlisle area.
    We have had heavy infestation last couple of years and many people have lost trees. Is Plot two in this area?

    Thank You!

  3. Hi I live in Carlisle, it is not clear from your map that we are covered. Please reply and assure me that our area will be sprayed,

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