Also, because of a general misunderstanding of how the different types of herbicides work, they are often blamed for the injury or death of plants that may be totally unrelated to the herbicides used around them. It is important to know how to diagnose herbicide injury for two reasons. And if you are accused of causing damage to a planting with an herbicide application, you should be able to determine whether or not the herbicide you applied could have caused that injury. To properly diagnose herbicide injury there are several things you need to know. Variegated foliage is a mixture of colors, usually green and yellow, though there are some pink or white variegation in some plants.
Corkscrew willow is an example of a plant that naturally has twisted branches.
There are weeping forms of many ornamental plants. Site conditions such as compaction or poor drainage may cause the death of roots, leading to problems with the foliage, and the eventual death of the plants. Under application of fertilizer can result in plants with yellow leaves, over application of fertilizer can kill roots. There are many other site-related problems that result in poor plant performance that can be blamed on the use of herbicides. There are cultural or physical problems that can mimic the injury caused by herbicides.