Category: Galls
-
Posted on May 8, 2014
Maple Bladder Gall
Extension Bulletin
-
Posted on
Linden Wort Gall
Extension Bulletin
-
Posted on
Hickory Pouch Gall
Odd lump-shaped galls on hickories are caused by an insect called the hickory pouch gall aphid. The gall began forming as the leaves developed. When the […]
-
Posted on May 7, 2014
Hedge Hog Gall
Extension Bulletin
-
Posted on
Grape Tube Gall
Slender “tube” galls on grape leaves are the result of tiny flies. Despite the odd appearance, these galls are simply a cosmetic issue.
-
Posted on
Grape Phylloxera
The funny bumps on grape leaves are caused by the grape phylloxera. This insect has a complicated life cycle and is found on both the […]
-
Posted on March 7, 2014
Birch Bud Gall
Extension Bulletin
-
Posted on
Ash Flower Gall
Odd-looking green or brown clumps in ash trees are galls caused by tiny Eriophyid mites. Although these clumps look odd, they are a cosmetic issue […]
-
Posted on
Apple/Pear Blister Mite
Funny bumps on pear and plum leaves are caused by an Eriophyid mite called Pear Leaf Blister Mites. The injury may start as a reddish […]