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
- Our blue spruce has been around for 30 years. but the new buds have no needles and they are brown. Even up the center of the tree is brown with no needles. My father has put a bed of rocks around it and I am not sure if it is affecting it. We also had two crimson maples and they lost all of their leaves half way through summer. This year there are no leaves at all. Do the trees have disease?
- What is the best thing to do with seedlings that are too tall for the seed starting kits? I have cauliflower and tomato plants that are 'leggy' and now too tall, but not yet ready to go outside. I received last week an advertisement about that hybrid zoysia grass that needs little watering and little mowing. Is that for real and if so, would it work in our climate? Supposedly it is cold hardy to -30. If I think that I there are gophers in my yard, what is the best way to eradicate them?
- We have 2 honeylocust trees in our yard. I would guess "Imperial honeylocust". They seem to be about 15 years old or so. They are spaced about 20 feet apart. This spring one has leafed out and the other is still not budding or leafing out. Over the winter, the one that is not budding turned bright red on the trunk, which we have never seen before. The tree is getting a very few buds and leaves on some main branches (like suckers) but no buds or leaves on the outer limbs. Is there anything we can do to save this tree?
- When should I cut back spent tulips and daffadills?
- 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?
- I have just moved into this new house and I have all these raspberry bushes. They have produced a crop of fruit and I went out and picked lots of berries. The berries themselves look very nice but they are a little small. When I brought them in the house I noticed a couple different kind of pests on them. A black little beetle looking bug and a little tiny bug that resembled the hair on the raspberry. I washed them off, cleaned them and ate them. Now I am all panicked that I will get sick. They tasted good but I have myself all freaked out not knowing if all the bugs got off. Will they hurt me? I want to make raspberry jam with all the berries I have. Is that safe?
- Do you have the names of companies or individuals who spray fruit trees in the spring and summer to prevent bugs and disease?
- Why do we rake leaves? What would happen to my lawn and flower garden if I just left them on the ground and let the grass and perennials grow up through them? We currently mulch them with a mower and let most of them stay. Are we raising the elevation of our lawn? Are we doing good or bad to it?