We sometimes take it for granted that everyone understands what Integrated Pest Management means. It is one of the cornerstones of our tree, plant and lawn health care programs. But, since many of our clients have questions about the practice, let me give you a little more information.
Decades ago, when synthetic pesticides were developed, they were used liberally. And they were effective at killing pests – but they killed many beneficial insects as well. This means that the natural balance in the area where they were used was severely disrupted. The whole food chain was interrupted, and often the birds disappeared along with the bugs.
The concept of Integrated Pest Management (IPM) arose from a desire to work within the natural order. So, rather than saying “We’re just going to eliminate all aphids”, we ask the question, “Are these aphids being controlled by their natural predators, like lady bugs and praying mantises?” Or “Are there certain plants that need to be protected, because they are particularly vulnerable to aphids?” If the aphids are growing out of harmony with their natural predators – perhaps on an especially alluring rosebush — we step in with a very targeted treatment to manage their population, either by killing the adults, or more likely, preventing the larvae from emerging. So rather than indiscriminately spraying insecticide all around a garden, we will apply horticultural oil (to prevent the emergence of larvae) to the aphid-loving rosebush.
Integrated Pest Management isn’t always organic – but increasingly, we find that natural or bio-rational products are best for these narrow-focused targets. And we’re always exploring organic options wherever possible.
So how do we know what to use and when? One of the fundamentals of Integrated Pest Management is inspection. Our technicians go out and inspect our clients’ properties several times a year, and then use products that specifically respond to any observed insect or fungal threats.
And managing insects through applications is just one tool for keeping plantings healthy and beautiful. We can also limit the spread of insects or diseases through selective pruning of infested branches as well as by improving the overall health of plants (and their resistance to pests) by improving the soil.
Ken Almstead – CEO, Arborist