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
- We want to grow aspen and scrub oak on our property. Can we transplant, if so how and when? Or do we need to grow from seeds? How often to water if we grow from seeds?
- We have a weed in our hay field that is choking out the field in quite a large area. The weed has a hard stem with heart shaped leaves about 1/4 to 1/2 inch in size around the stem leading to seed pods that look like flowers that are hard and have a seed in them. The seed is red and the husk around them is green when the seed leaves the husk is white, stem is hard green and stick like.
- We just planted a maple tree in our back yard and noticed today that almost every single leaf has large circular spots that appear to have been "eaten" out of the sides of the leaves. I've read about a tar disease, but I don't really see the tar on the leaves. What could it be and is there something we should do about it?
- There is a pecan tree where I work that is dropping leaves like crazy. Can I add the leaves to my vegetable garden and let it compost over the winter? Is there any toxicity in pecan leaves?
- 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?
- My greenhouse made of visqueen does not allow the sun to hit soil, causing the growth of algae on the surface. What must be done?
- I live in Mapleton. I have been reading about the James Pecan Tree, which is supposed to mature by September 1st and be okay in zone 5. What do you think about my trying to grow it here? How do they do?
- Two Questions: 1. When do Gooseberries flower? 2. When is the best time to plant tulips?