Ask a Question forum→Mystery apple tree disease

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London, UK
Jun 3, 2018 10:57 AM CST
Attached are 2 pics of an apple tree in my garden. The trees bark on the trunk and branches has become covered in pale grey/green circles with tiny black dots in the centre. It also has what appears like a fine cottony fungus in areas where branches have previously been pruned. The circles and the cottony fungus both appeared over the last three months or so. It has previously been fine.

Any help much appreciated!

Thanks, Michael
Thumb of 2018-06-03/visitor/7dcc45

Thumb of 2018-06-03/visitor/29221c

Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Jun 3, 2018 2:31 PM CST

You have two things going on. The first appears to be lichen growing on the trunk of your tree. They won't hurt anything.

The other stuff.... Maybe mealybugs? Try spraying those spots with rubbing alcohol and then blast them off with the hose.

Report back with more photos.
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

President: Orchid Society of Northern Nevada

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