Pesticides are used to protect your trees from pests and diseases. It can be disappointing when you plants trees and flowers from reliable tree seller only to find them infested later by pest and insects. Sometimes they work effectively, while other times you do not see improvement. Often this is not the fault of the pesticide but is due to other factors. We need to understand these factor when dealing with tree pesticides and diseases. Below are some of the factors you need to familiarize yourself with:

How to avoid mistakes when dealing with pesticides


The time you apply your pesticides is of the utmostflower importance. Every pest has a window of vulnerability, as do foliage diseases. Improper timing can lead to dead leaves or needles until the following spring when the tree produces new growth.

To protect against various insect species, pesticides must be used during the life-cycle stage when it is least protected, such as larvae or nymph. Foliage diseases are most susceptible in early spring at bud break when new leaves are forming.

Wind drift

The Wind can impact the effectiveness of your pesticide application by causing the chemicals to drift away from the tree. If 70 percent of the pesticide comes into contact with the tree, then you can assume it will only be 70 percent effective. Take this into account when spraying pesticide. You don't want to over-apply, but you want enough of the pesticide to reach the tree that it will work.

Mixing errors.

dssdfsdfsfsdfA pesticide is more likely to fail when the wrong rate, product or pH water is mixed. You should follow the guidelines that come with the pesticide to ensure you are mixing correctly.


In the case of specific pesticides, like fungicides and insecticides, you must have a neutral pH for the highest rate of effectiveness. If you don't, the longevity of the pesticide is reduced to weeks or days. You can pick up a pH kit to test the pH of your water supply.

Product degradation.

Always check the label to learn how to store your pesticide properly. Although any pesticide can lose effectiveness over time, this can happen more quickly if the pesticides are stored in temperatures warmer or cooler than recommended. A good option is to purchase pesticides about the season you expect to use them. Other factors such as heavy rainfalls, weak roots, incorrect pesticide diagnosis or faulty sprayer calibration can all play a part in the success or failure of your pesticide.