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'm planning on using Imidan on my fruit trees. I would like to use a sprayer, but all the application information I've found is in lbs per acre. How much Imidan should I use per gallon.
- I want to plant a lilac hedge. I've never done lilacs before - how far apart should I plant them? Can I do a double row for a thicker hedge? If so, how far apart should the rows be? How fast do they grow? Do they need special care (they will be pretty close to a fairly busy road)? Can I plant them now, or should I wait until it's a little warmer? What are their fertilizer and water requirements? Will they be useful as a bit of a wind- and soundbreak? Thank you.
- I have a new laurel plant whose leaves have turned half brown. Is this caused by heat?
- I have many Chanticleer pear's in my yard. Each year they swarm with Wasps during the day. There are not any nests in them. Is there anything I can do or spray to remove them? They have been swarming many of my Quakies as well. I have read online that it could be from aphids on the trees and the Wasps go after the sugary substance the aphids leave behind. I have noticed on my Quakies that there are small holes on some leaves which might mean aphids, but on the Chanticleer's there are not any holes on the leaves so I don't think aphids would be on those. Please help the wasps are out of control on these trees.
- Can Blenheim apricots be grown in Cache Valley? If so, what problems might I expect?
- How can I get rid of Bur Buttercup? We have tried poisons over the past few years with little result. This year we tried a pre-emergent with little to no results. What can we do do get rid of them?
- We moved into our 2-story home in Lehi 1 year ago. The tree out front (which I planned to have my husband cut donw) has doubled in height since then. I don't know what kind of tree it is...medium size, darkish leaves. How do we (and when should we) cut it down to prevent it from sending up suckers?
- I recently (spring 2009) planted a globe willow in Herriman, altitude 5300. I was told by an arborist that it should be okay as there are other successful globes in the foothills of the Quirrahs. It has now got leaves (May 2009) but they are getting yellow towards the mid to top and I suspect iron chlorosis. This is yellow, not the beautiful light green as usual.It gets good water and sun. It was planted with mixture of native clay, potting/planting soil and mulch including "mike" a good microorganism suggested for good plant rooting. Should I give it a dose of iron or let it be? Or us this normal? Help!