Question
When is the best time to spray a cherry tree for worms?
Answer(s)
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 first.
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.
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 13th weekly advisory Degree Day accumulations, in Holladay is 600 and in West Valley is 644. Look at our advisory for total of 1060 or go by physical appearance of salmon blush of cherry fruit to spray.
Other Questions In This Topic
- What kind of Strawberry plant do you recommend? I remember Crocket's Victory Garden recommending an ever bearing one for the New England area.
- My peach trees seem to have something sappy oozing from the trunk, somewhere between the middle and top part. I thought borers were usually at the bottom of the trunk. Is it a spread of borers?
- I have small white worms in my turnips and radishes. How do I deal with this problem?
- I have an 11 year old sugar maple. For the past few years the leaves have been getting more and more yellow. I bought an iron product, read the directions, and sprinkled it around the base. Instead of turning green the leaves are still yellow and small brown spots all over them. Help!
- I am preparing to sod my front yard in the next couple of weeks. I am looking for a grass that is hardy, drought and weed resistant. I also have a dog that can be somewhat hard on grass. I looked into Zoysia grass, but determined it wasn't a really great grass for this climate. What would you suggest, and where might I find it in Northern Utah?
- My bush beans have holes in some of the leaves. What is causing this? What can I do to fix it?
- My new lawn I had hydroseeded last year went to seed this year and and is still looking poorly is there anything I can do to bring it back to looking good again?
- 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.