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
- I have beautiful hosta and fern plants growing outside. How do I protect them so they will survive the winter? Do I need to dig them up and bring them inside?
- We recently purchased new sod for our yard. It came with small redish brown beetles. I asked the sod company what they were and they didn't know. Are these beetles bad? Will they kill my lawn?
- We are putting in a backyard with grass seed instead of sod. I am wondering if we need to add lime to our soil to change the pH and also what types of grass work best in our area. I assume that Kentucky Bluegrass would be best, but should I get a mix or just the Bluegrass? Are certain brands better than others?
- I have varmits that are ruining my lawn during the winter (under snow). They make trails and destroy the lawn about 4 inches wide. I can find no holes only the trails and dead grass flipped to the side of the trails. Any ideas? We are going crazy trying to figure this out. We have never had this problem until last year.
- This year we planted our first home garden. It was a lot of fun, but we need to know what to do to make it better next year. Specifically: our plants grew VERY large, but did not yield much fruit. What fruit we did get was typically small and misshapen. We did not fertilize, except some nitrogen along with dead lawn clippings last fall. What should we do this fall to get the soils ready for more fruit and less leaves next year?
- I planted 5 flowering pear trees. The leaves are drying out and dying. What can I do to make sure the trees do not die from transplant shock?
- The grass in certain areas of my lawn is not growing well. I've been told it may be due to the fact that they're adjacent to pine trees, and that fallen pine needles have caused locally acidic conditions. It is suggested that I apply Gypsum in these areas. Are the diagnoses and suggestions plausible ?
- We currently have an elm tree in our front yard. It has been diagnosed with slime flux. We would like to plant another tree next to it,seeing as they said the stump was so big that they would just leave it. Will this cause a problem for any other trees? We want another large shade tree. Will it get the slime flux too if we plant it near it?