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
- Last May, I planted my living Christmas tree (5 foot Black Hills Spruce) after wintering it in a sheltered area with mulch. It was inside for only 3 days. It grew well all summer with little green buds until the first hard frost and then it died all at once. What happened? Was it the tree or the location? I live at 7,000 ft; the planting location is a little bit rocky and I don't want it to happen again. Thanks!!!
- I have several large beds in which I would like to plant shrubs, perennials, and some annuals. I am wondering what, if any, weed barrier I should use for these beds. I have heard different opinions advocating weed fabric, newspaper, or no weed barrier at all other than a layer of bark/mulch. If a thick layer of mulch alone is virtually as effective as weed barrier, I would rather avoid the expense and hassle of laying the barrier. Which is the best option?
- When is the best time to spray a cherry tree for worms?
- The leaves on my snowball bush are withered and the flowers almost nonexistant. The neighboring lilac doesn't look to good either. What could be causing this problem.
- I planted my vines mid may before the endless rains. Now many leaves are turning black in spots. Will this correct itself as things dry out and warm up?
- Can I use smoke bombs to kill gophers in my yard if I have a garden? Will the chemicals affect the vegetables I plant?
- My mugo pine is turning an orange color and the needles are dropping. What caused this and can it be saved?
- I have some problems with native Juniper trees dying(25 ft average height). They start turning yellow (chlorosis has been ruled out) then brown on south side first, then slowly spread to north end of plant. I have cut down one and found no signs of insect damage or disease. Only trees located next to a dirt road(South of trees) are currently affected. They started changing in color last summer. The county does spray for russian thistle on road. Yet no other trees seem to be affected. Can you provide other possible reasons or someone that may be able to come and see them (test them)?