Knowledgebase
Apple leave disease/pest #753680
Asked June 03, 2021, 8:31 AM EDT
I am in Southeast British Columbia, zone 3. We planted a Honeycrisp apple a few weeks back, a new tree from the local garden centre. It now has leaf rollers, but it also shows many leaves with brown spots and a bit of a hairy fuzz right next to them. I would appreciate advice if I need to treat it / how long to wait before treating it / how to treat it.
Glacier County Montana
Expert Response
Hello Barbara,
Your question was entered in the Michigan Extension queue. I will give you some information that may help.
If you have not followed a spray program you will get leaf spots of various sorts on the leaves.
These guides have a spray program, following the flower and bud stages to time sprays.
https://www.extension.purdue.edu/extmedia/ID/ID-146-W.pdf
https://plantpathology.ca.uky.edu/files/ppfs-fr-t-18.pdf
Information on leafrollers found on apple and their control- http://treefruit.wsu.edu/crop-protection/opm/leafrollers/
Here is detailed info on Homeycrisp
https://mnhardy.umn.edu/varieties/fruit/apples/honeycrisp
While Extension does not endorse retailers or brands, this pollination chart can be used to check if you have cross pollination suitable for your new tree. https://www.acnursery.com/resources/pollination-charts/apple-chart
There are organic options to help with apple pests, such as bagging individual fruits and using kaolin clay. http://www.groworganicapples.com/organic-orcharding-articles/surround-kaolin-clay.php/
I hope this helps you care for your new tree.
Glad to be of help!
