Ask a Question forum: Apple tree fungus

Views: 154, Replies: 5 » Jump to the end
Chicago area
icanhear
Aug 1, 2017 10:17 AM CST
Found bright orange spots on my apple tree leaves and it's late in the season. Is it too late to treat this disease? Photo attached
Thumb of 2017-08-01/icanhear/473002

Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
Aug 1, 2017 12:41 PM CST
I would treat it.
Also check into dormant sprays, that are needed. They will solve allmost any problems you will ever have.

Philip 😎😎😎
Anything i say, could be misrepresented, or wrong.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
Aug 1, 2017 5:58 PM CST
Do you have Red Cedar trees near by? Did you see any orange fingery things hanging from them? Your apple tree has a fungal disease called rust that is carried by Red Cedar trees.

http://extension.psu.edu/plant...
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
Image
sooby
Aug 1, 2017 6:16 PM CST
I was thinking the same as Daisy, is there anything like the second picture on this link on the other side of the leaves?

https://www.phillyorchards.org...
Chicago area
icanhear
Aug 1, 2017 6:48 PM CST
I do not see any red cedar trees in the vicinity. From what I understand the spores can travel great distances. I was just hoping it wasn't too late to treat the tree and I was looking for reassurance that my tree isn't in jeopardy
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
Aug 1, 2017 8:03 PM CST
It won't kill your tree but it won't be a happy camper either.

The first step is to break the cycle. The life cycle of the rust takes two hosts, one is the apple tree. Besides Red Cedar, Juniper and Arborvitae can also be part of the cycle. Look for the orange things in those trees/shrubs and get rid of them before they release their spores. That will happen next spring about the time the flowers on your apples tree turn pinkish.

The rest of this summer and during fall/winter, rake and dispose of all leaves and prunings in your garbage can. You don't want to harbor the spores in your own yard.

If this becomes a chronic problem, you will have to look for a fungicide that treats rust. The problem is that you might need a license to buy anything that does.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org

« Garden.org Homepage
« Back to the top
« Forums List
« Ask a Question forum
Only the members of the Members group may reply to this thread.

Member Login:

Username:

Password:

[ Join now ]

Today's site banner is by dirtdorphins and is called "fivelips"