Each garden and therefore each gardener is faced with pests that plague their plants from time to time. It’s something that we have to learn how to deal with, and when possible learn to control those pesky pests.
Some plants such as honeysuckle, citrus trees and other flowering shrubs and vines are infested each year with aphids and whiteflies. How can you control some of these pests naturally?
Well, whiteflies can be a real challenge. Planting marigolds near or around plants that frequently get infestations of whiteflies might help. Marigolds secrete a substance around their roots that is absorbed by nearby plants and this helps to repel the insects. This might now work for large shrubs and trees though.
Whiteflies have several natural enemies. Get to know the bugs in your garden. Some of them are beneficial. Insects such as lacewings, big-eyed bugs, minute pirate bugs and a tiny wasp called Encarsia are natural predators of whiteflies. Avoid using pesticides in the area as that will kill off these beneficial bugs that otherwise would find and attack the whiteflies.
Aphids are a big problem in my garden each year. They love my honeysuckle – particularly my Harlequin Honeysuckle for some reason. They also thrive on the newly developing leaves and flower buds of my roses.
When an aphid infestation is really bad I get one of my spray bottles and add a couple of drops of dish washing liquid to the water in the bottle. I then go out and spray the affected areas of each plant with this mixture. By selectively spraying the affected areas of the plants I don’t bother the many other insects that are in my garden- many of which are beneficial. I find that for really bad infestations I have to spray the affected plants with this soapy mixture two or three times in one week. After that the aphids are usually gone.
Like the whitefly, aphids have many natural enemies as well. One of the most important enemies of the aphid are the various species of parasitic wasp that lay their eggs inside aphids. Other predators that feed on aphids are lady bugs or the lady beetle as it’s known in some parts, lacewing and syrphid fly.
There are a number of mail order companies, and some nurseries, that sell a huge variety of beneficial insects for the garden. You might think about purchasing some of these insects to help control your whitefly or aphid problems.
I’ve purchased ladybugs in the past. 2000 I believe! I tried to put them on the plants that I knew the aphids and other pests enjoyed bothering. The lady bugs stayed in my garden for the most part for a day or two but then dispersed throughout the neighborhood. I do think that at the time they stayed long enough to control my pest problem.
If anyone has any other suggestions for controlling whiteflies or aphids in the garden I’d love to hear your suggestions. Please leave a comment.
