Laportes Nursery is Ottawa's premier garden centre selling plants, tools and landscaping supplies

Pest Protection

Applying a combination of dormant oil and lime sulphur to plants is a safe, organic, and effective solution that helps fight overwintering pests and prevent diseases. You can apply the mixture on shrubs, rose bushes, and most trees (except Sugar Maple and Birch).

Dormant oil and lime sulphur can be purchased at Laporte’s. Although we are not yet officially open for the season, you’re welcome to stop by to pick up these items Monday to Friday, from 8am to 5pm.

When to apply:

Follow these three simple, but important rules for a successful application:

  • The temperature must not drop below 0 degrees Celsius the night of the application.
  • It must not rain for 24 hours following application.
  • It must be applied before buds swell and crack.

Cedar Hedge protection

The cedar mite and cedar scale are two powerful pests that can only be controlled using dormant oil.

Because these insects can kill your Cedar Hedge, protection is vital.

When to apply:

Apply the dormant oil sometime between mid-March and mid-April.

You should also follow these two rules:

  • The temperature must not drop below 0 degrees Celsius the night of the application.
  • It must not rain for 24 hours following application.

Important Note: The application should consists of dormant oil ONLY. Do not use lime sulphur for Cedar Hedges.