Frequently Asked Question
Pecan Tree: growths inside the leaves - pecan phylloxera galls
Last Updated 5 years ago
info from Neil Sperry Facebook post: https://www.facebook.com/NeilSperryTexas/photos/a.432883880426/10161712090935427/
"These are the work of a small aphid-like insect that stings the brand new growth in early spring and lays her eggs. The galls are the plant's reaction to the effects of the sting.
Pecan phylloxera galls are more cosmetic than harmful. This first round of impacted leaves will fall at this time and usually that's about all you will see.
By the time the galls are visible it's too late to spray anyway. However, you can apply Carbaryl spray to as much of the tree as possible immediately after the small leaf buds start to emerge if you wish.
I live in a pecan forest, and honestly, I don't worry about a few phylloxera galls. But at least now you know."
More information, and a photo of the inside of the gall:
https://northernpecans.blogspot.com/2018/06/galls-on-pecan-leaves-pecan-leaf.html?m=1
"These are the work of a small aphid-like insect that stings the brand new growth in early spring and lays her eggs. The galls are the plant's reaction to the effects of the sting.
Pecan phylloxera galls are more cosmetic than harmful. This first round of impacted leaves will fall at this time and usually that's about all you will see.
By the time the galls are visible it's too late to spray anyway. However, you can apply Carbaryl spray to as much of the tree as possible immediately after the small leaf buds start to emerge if you wish.
I live in a pecan forest, and honestly, I don't worry about a few phylloxera galls. But at least now you know."
More information, and a photo of the inside of the gall:
https://northernpecans.blogspot.com/2018/06/galls-on-pecan-leaves-pecan-leaf.html?m=1