If plants are pruned incorrectly they become more susceptible to pests and diseases, not to mention they look really bad too. Landscape plants usually require more pruning than do indoor plants, they have more room to grow and usually get much larger and unruly. Most people hire companies to come in when their trees need pruned, but they can usually handle the smaller jobs by themselves. It takes a little bit of research to learn how to prune correctly and it may be different from plant to plant, but it is necessary to keep plants healthy. The Pruning Book Improper cultural practices can retard growth, weaken plants ability to withstand adverse conditions or pest attacks and enhance disease development.
Early detection makes it so much easier to manage and control a problem.
If plants are not inspected on a regular basis, a problem may go undetected for quite some time and possibly be untreatable when discovered. However, just because you know that something is wrong doesn't fix it. An accurate diagnosis is the next step in controlling the problem. There are many services available to help people pinpoint what the problem is, garden centers, retail nurseries and cooperative extension services are usually more than happy to help. Just make sure to have an ample amount of the plant that shows the problem so they are able to see what's wrong without a doubt.