Ask a Question
Notify Me On Question Update
Email this Question
When do I spray my cherry tree to prevent worms?
Rate This FAQ
The best thing to do is to check the USU Fruit Tree IPM(Integrated Pest Management) Advisories that are emailed weekly to subscribers, or you can check online.
To check advisories go to http://utahpests.usu.edu/ipm/htm/advisories/treefruit
To subscribe go to http://utahpests.usu.edu/ipm/htm/subscriptions
As of May 6th advisory, the degree day accumulations in Salt Lake are 500 & 517. See next excerpt:
The timing of your spray depends on the development
of the fruit. We usually recommend starting applications at
1060 degree days after March 1 (base 41). However, the flies
cannot penetrate the skin of the cherry to lay eggs until the
cherry has developed a salmon-blush color. So use that guideline
for when to start spraying. Check the fruits at the top of
the tree and in the sunniest locations as these will color up
This excerpt came from last year (20080 advisory, go to http://utahpests.usu.edu/ipm/files/uploads/AdvisoryUpdates/Advisory08/Fruit-IPM-05-28-08.pdf to see photo of cherry fruit appearance for timing of spray.
So as temperatures go up and degree days accumulate, you'll want to spray at total of 1060, and advisories have that information weekly.
Submit Your Suggestion
Other Questions In This Topic
- Two questions; I have an dwarf Honey Crisp apple tree that is about 5 years old. Last year it had a dozen apples. I didn't disturb the fruit spurs when I picked the fruit. This year there were no blossoms on the tree. I didn't prune it at all. What can I do to help it produce every year? Second question; I have peach borers in the main branches of my nectarine tree. The tree seems healthy other than the borers. What can I do about them at this point? Will it help to dig them out? Will it help to spray? Will they winter over to next year?
- We tilled our garden and planted peas and lettuce about three weeks ago. Nothing has come up yet. We were talking to our neighbor yesterday, and he told us that about 30-40 years ago, in a fit of vexation, the former owner spread an industrial strength soil sterilizing chemical on the area in which we planted our garden. He further explained that weeds have only started to grow in that area in the past 5-10 years. This information has caused my wife to give up on trying to cultivate this area. Should we give up? What can we do to amend the soil in this area?
- I have grubs in my yard. Any suggestions?
- I recently had a handyman come to adjust the sprinklers at a house we do not live in and are trying to sell, and he unfortunately turned off the sprinklers without us knowing, and the grass went a few weeks without being watered. Since we discovered it, we began watering and I laid down turf builder to see if I could jump start the regrowth. The grass looks brown and dead over much of the lawn, however, since I fertilized, I can see little green spots and individual green shafts here and there. What should I do now? Can I seed over the existing dead lawn? What is the fastest and best way back to green without tearing up the whole yard and starting again? (The backyard sod was new last year)
- I have a new laurel plant whose leaves have turned half brown. Is this caused by heat?
- I am looking for a shrub or tree that can line my driveway but, the problem is that it is facing the south and gets little to none water. Can you suggest some drought resistant plants that will work for that particular area?
- I have thornless red raspberries that have been planted for three years. (I don't know the name of the variety.) The berries are very small - too small. Suggestions?
- I planted a spanish fir in my yard just two weeks ago. It appears to be dying. How often should I be watering it? And how much water should I be giving it each time that I water?