Ask a Question
Notify Me On Question Update
Email this Question
How do I get rid of codling moth?
Rate This FAQ
Codling moths lay their eggs on apples and pears. The eggs eventually develop into larva that bore into the fruit. It is the larva or worm that becomes a worry to gardeners and fruit growers.
Over the past few years, many products to control codling moth have been taken off the market or their use has been restricted to professionals only. However, a few effective products remain on the market, both old and new.
Mike Pace, Extension agriculture agent and Tony McCammon, horticulture assistant, both from Box Elder County, conducted trials last year to determine which products are most effective against codling moth. Their findings follow.
· The most important finding is controlling the first generation of the pest, including timing the spray to coincide with the results of Utah State University’s trapping and monitoring. Other important practices include spraying for proper coverage and thinning the apples appropriately. When two apples touch because of inadequate thinning, spray coverage is diminished. One small, unprotected spot leaves an entrance to the apple that a worm will likely find.
· Some products work better than others. The most successful insecticides are Sevin and Malathion. Sevin is 89 percent effective and Malathion gives 75 percent protection when each is sprayed according to label instructions. For most homeowners, this amount of control is acceptable.
· Organic controls that were tried include Syd-X (coddling moth virus), Last Call (pheromone attract and kill product) and apple bags. Syd-X is not readily available for homeowner use, but showed great promise with 70 percent control. It may be on the market in the next few years, but is expected to be expensive. Last Call was found to be a little worse than not spraying at all. It did a great job of attracting the moths, but did very little to kill them. The apple bags had a 98 percent success rate after two cover sprays were applied before putting bags on the apples. The down-side to apple bags is the time spent placing a bag around each apple, then removing it later in the year. Apple bags, which can be found on the Internet, are specially designed to protect apples, but not damage them.
· Another product not included in the trial, but which is reportedly successful, is Spinosad. Sold under different trade names, this organic product is derived from the fermentation of a naturally-occurring organism. It has proven successful in some research applications. As with all products, be sure to read and follow all label instructions carefully when applying.
· Contact your local county Extension office for the specific timing of coddling moth control in your area.
Submit Your Suggestion
Other Questions In This Topic
- A large branch has died on my apple tree. What could have killed it?
- Can GF-120 be used by home gardeners to control Cherry fruit fly? How should it be applied?
- When I first moved here, my peach tree was unhealthy and barely alive. With regular irrigation from the water that comes down from Cedar Breaks National Monument and all the minerals, it has become very healthy with good fruit. Now it looks like it used to - fruit, but hardly any leaves. Could it be the drastic changes in weather one week in April after Easter - 75 degrees one day, gale force winds the next, then freezing rain and snow, all during bloom time?
- I just found black spots on some of the peaches on my peach tree. I cut one peach open and the pit split in half really easily and there were small redish and black spots in the pit. I was wondering what are they, and if there's anything I can do about it?
- I want to plant 4 fruit trees along the border of my garden. How much space must I give each tree between the brick wall border and between each tree? I am not sure if I should plant a semi-dwarf or dwarf tree for apricots and peaches but I would like a regular sized apple tree. Also, can Gala Apple trees grow here in Utah?
- I have some young apple trees that have sprouts coming up around trunk, i'm told to cut these off and other low branches and stick in soil and roots will develop to plant. Will this work? Am I supposed to cut at angle and put in soil as I'm being told?
- I would like to plant 2 plum trees and would like to make sure they have sufficient pollination. I would definately like a Italian Plum (Prune) and some other plum that is freestone and good fresh eating with a great flavor. I would like a Satsuma but have read that the european plum and the Japanese plum varieties are not compatible as far as pollination. Would the Santa Rosa be a good substitute for the Satsuma?
- What dwarf nectarine (or semi-dwarf) will grow well in SL County (on the East Bench)? Also, how much space will it need when fully mature?