It's Official. ALHB is Gone. Have You Celebrated?

May-June 2013


Nursery-Landscape Guide Goes Online
The Nursery & Landscape Plant Production and IPM guide (publication 383) is changing. We have pulled out all of the pest management regulations and have assembled them in an online version that can be updated more frequently. The new guide, publication 840, is called the Crop Protection Guide for Nursery and Landscape Plants and can be found at:

The remaining content from the previous version has a lot of really useful information on water quality, plant nutrition, soil fertility and Integrated Pest Management. Seriously, crack it open some time when you can’t sleep or are waiting for a dentist appointment, you will be amazed. This supporting content will be revised and updated later this year and appear in a printed guide (publication 841) in early 2014. This means that your existing publication 383, Nursery & Landscape Plant Production and IPM guide that was published in 2009, is still the perfect companion guide to the new, online Crop Protection Guide (840). 

Planning your IPM Service Calendar for Your Employees
Are you looking for information on how to organize your pest monitoring services for your landscape and arboriculture properties? It’s all there in publication 383, Nursery & Landscape Plant Production and IPM guide, 2009. Starting on pg. 64, there are monitoring tables that outline landscape plants and their most common pests. All it takes is a general look at your wall calendar, a quick look around to see what development stage key Phenology Plant Indicators are in (e.g. the Aesculus hippocastanum, horsechestnut, is in full bloom), Growing Degree Days (which you can find in my Nursery-Landscape Report) et voila, you have a table of common pests you can scout for and what life stages you should find. In addition, the monitoring tables tell you which pest life stages present are vulnerable to pesticide applications (V). Does this make planning your service calls a little easier?

Hooray! Asian Long Horned Beetle Eradicated in Canada 
Do you operate an arboriculture or landscape service in the Greater Toronto Area? If so, this news is going to make your job easier and your business more profitable. As of April 5, 2013, the Asian long horned beetle is considered to be eradicated from Canada (Ontario). It was detected in the southern part of the City of Vaughan and the northeast part of the City of Toronto in 2003. The little critter was last detected inside the regulated area in Toronto in December 2007. As far as the regulatory agencies are concerned, all those efforts to eradicate this exotic pest have been worth the investment and Ontario is considered no longer infested. As a result, the ALHB Infested Place Order is no longer being enforced (are you doing a happy dance yet?). This means that tree materials, including nursery stock, trees, logs, lumber, wood, and wood and bark chips from tree species that are susceptible to the ALHB may once again be freely moved out of, or through, this area. I wonder what they are going to do with all of those signs – there should be some sort of ceremony and celebration. 

Trees & Curb Appeal
I think if you are representing a business, you need a good tag line, a strong and believable elevator speech AND some quick points on how your business benefits people, the environment and the economy. In arboriculture, it’s easy to talk about all the benefits of maintaining strong, healthy trees in the urban landscape. Improved air quality, reduced dust and noise, habitat for animals, buffering summer temperatures… the list goes on and on. But what about direct impacts on the mighty Canadian dollar? Homeowners have a huge financial and emotional investment in their properties and they are always looking for ways to make that investment appreciate more rapidly. So what is the impact of planting and maintaining trees and an aesthetically pleasing landscaping? A recent article in the Journal of Environmental Horticulture, “Landscape and House Appearance Impacts on the Price of Single-Family Houses” by Elam and Stigarll (December, 2012) cited a lot of interesting benefits:

  • Studies have found that tree cover adds 2-9% to the value of existing houses. 
  • Newly built houses on tree-planted lots have a 7% higher price than those on bare lots. 
  • When overall landscaping improves from average quality to excellent quality, house price increases by 10-12%. 
  • When you combine trees and landscaping with some basic home improvements (painting, windows, front door, etc.), the house price can increase up to 17%. 

Don’t forget to check out my weekly Nursery-Landscape Report ( under “Crop and Pest Updates.” And coming soon, the ONNurseryCrops blog!  


Our mission is to enhance and promote the care and benefit of trees for present and future generations in Ontario through education, research and awareness.