There can be few gardeners who have not experienced damage to flowers and crops from insects of various sorts, but not all insects are pests. The seven insects illustrated in the chart below should be welcomed into the garden since they will act as natural pest controllers. There are four good reasons why you should rely on these beneficial insects including the avoidance of chemical pesticides to which several bugs have developed resistance. In addition these good guys will save you money. This information comes from an article which I found on the Organic Lesson website.
Not all insects are pests. There are a number of species we refer to as beneficial insects that could help eliminate and control pests that do a great deal of damage to our beautiful gardens and lawns. Beneficial insects could be considered a component of biological control, which refers to the method of controlling pests using other living organisms. If you are new to this method then here are some reasons why you should consider using it to combat garden pests.
Why Use Beneficial Insects
1. Chemical pesticides ? the first and most obvious benefit to using these insects is not having to resort to chemical pesticides. The non-toxic approach allows you to grow plants organically. You won?t have to worry the next time you take a bite out of your home-grown fruit or vegetable.
2. Good bugs ? keep in mind that chemical pesticides don?t only wipe out the bad bugs. They are just as deadly to the beneficial insects. This is bad for the long-term maintenance of your garden as there won?t be a population of natural predators to feed on the pests. Pesticide may be effective at wiping out of the first wave of pests, but the same cannot be said for the second wave.
3. Cost saver ? beneficial bugs are there to stay if you are able to build an environment for them to thrive in. You might not even have to spend money if the beneficial insects are native to your area.
4. Resistance ? a number of insects are starting to show greater resistance to chemical pesticides. According to the Pesticide Action Network, between 500 and 1,000 insect and weed species have developed resistance to pesticide since 1945. There is nothing much a pest can do if it is getting eaten by a predator though.
See more at Organic Lesson