Ask a Question forum: Gummy sap-like substances on my stone fruit trees

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Fallbrook, Calif
roncal
Jan 10, 2018 4:24 PM CST
After some light pruning of my stone fruit trees (which all look healthy), I noticed an amber colored gummy substance on some of the branches.What is this , is it harmful to the health of the tree, and how do I treat it? Thank you
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Jan 10, 2018 5:07 PM CST
Ah-Oh! Grumbling

Check out Cytospora canker and Peach Tree Borer.
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

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Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
Jan 10, 2018 6:34 PM CST
May not be to late to spray for canker.
Borer's, probably inside.
Look into dormant sprays, for next year.
Borer's hibernate in ground over winter. Next mid winter apply " Tanglefoot " to tree, to stop them.
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
Jan 10, 2018 7:03 PM CST
Its not too late to treat for either problem but first, roncal needs to decide what the problem is.

There is plenty of information from University Extensions on how to treat both problems but they are usually PDF's so we can't list a link for you.
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
[Last edited by DaisyI - Jan 10, 2018 7:10 PM (+)]
Give a thumbs up | Quote | Post #1618233 (4)
Name: Sue
SF Bay Area, CA (Zone 9b)
Container Gardener Canning and food preservation Dog Lover
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Zuni
Jan 10, 2018 11:12 PM CST
@roncal I was trained as a master gardener many moons ago in Oregon, and what we mainly learned was how to research problems and solutions for a particular region.

So, here's your regional resource for master gardeners who can help you for free:

http://ucanr.edu/sites/Riversi...

My first thought was aphids, which will produce a sugary sap. This is why some ants will actually "farm" aphids - to get the sugary sap they produce.

I'd expect it is something similar, if not actually aphids. But, I highly suggest you contact your local extension service, which usually provides master gardeners trained in problems specific to your area, and for free.

Please let us know what you learn, so we can all learn, too.
[Last edited by Zuni - Jan 10, 2018 11:14 PM (+)]
Give a thumbs up | Quote | Post #1618338 (5)

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