Pecan Tree Leaf Disease?

« Back to Name that Plant

Date Photo Taken: 05/29/2013
Location: Forest Park, GA
Posted By: thepwrice

Notes:

This is a picture of what appears to be blister like bumps on the leaves of one of my pecan trees. Is this a disease or fungus? Please advise. Any help would be greatly appreciated.

COMMENTS

  1. parityanimal Flower Fanatic says:

    Probably galls that are caused by insects or chemicals that irritate the leaf surface.

    May 31st, 2013 at 9:18 am
  2. Jeffrey Clower Unregistered says:

    We have the same thing on our pecan tree leaves. The Extension Service did not really know for sure, but said it is probably galls. The galls are caused as a result of the feeding of an insect called pecan phylloxera in April. They split open in May and early June releasing aphid-like insects. The galls then dry causing twig dieback and leaf drop. Can cause the loss of pecan crop. They damage tree appearance but rarely kill tree. Most effective control is in spring when eggs hatch and small insects crawl to buds. One or two sprays of Provado 1.6F, Warrior 2.56 and Lorsban 4E…But how do you spray an entire tree???? We haven’t found a way yet.

    May 31st, 2013 at 11:24 pm
  3. jennifer Unregistered says:

    I have something like this on my pecan tree too. I’m in Arkansas. They almost look like some kind of cacoon. But I’ve noticed them on other parts of the tree too. On leaves and on stems, and some where pecans are supposed to grow. And some of them appear to have tiny leaves growing from them. I’ve never seen this before. We do not use chemicals around our yard. But earlier this year the city came out and butchered one side of the trees, cutting all the limbs back to keep them off power lines. I am stumped.

    June 2nd, 2013 at 2:53 pm
  4. jose rendon Unregistered says:

    How do u take care of this fungus galls……

    May 9th, 2014 at 7:26 am
  5. Jason Unregistered says:

    Central la. I have the same how do you get rid of if an how to prevent

    May 20th, 2014 at 4:14 pm
  6. shamalama Registered says:

    Metro Atlanta here. Same situation. Evey year around May. From the lowest branches to as far as I can see.

    Other websites say, “They can be created by fungi, bacteria, mites or nematodes, but most are caused by insects. Surprisingly, they don’t seem to have much impact on the plants. Leaves with galls apparently continue to photosynthesize effectively, while providing shelter for the small larvae.”

    “The pecan leaf phylloxera, a type of aphidlike insect, feeds almost exclusively on the leaves of pecan trees. Small infestations may result in nothing more than minor yellowing or insignificant leaf drop, while major infestations can threaten the health of entire limbs. If the phylloxera attack young shoots and nuts, the tree might not produce nuts both in the current and following year.”

    “Fortunately, this looks worse than what it is, and it rarely causes serious problems for the pecan tree. Once the galls appear, it is too late to control pecan phylloxera for the season. However, in most cases it is not necessary to be concerned, since they usually do not cause enough damage to pecan trees to warrant an insecticide application. Spraying large backyard trees is usually not practical in any case.”

    May 25th, 2014 at 8:20 am

Leave a Reply