This cool, wet weather is causing maple leaf blister, a fungal disease that blackens the leaves of red, silver and sugar maples, and possibly some Norway maples, statewide. But it won’t kill the ...

Alias: The pear leaf blister mite, or pear rust mite. This is such a small pest that it is almost pointless to describe the physical characteristics. It is a small (too small to see with the naked ...

In the summer and fall their damage can be seen as brown raised “blisters” on the leaf surface. In our area, the most common blister mite in the orchard is pear and apple-leaf blister mites.

Mr. Eiseman is also a keen observer of the architects behind galls, those abnormal growths that can take the shape of Ping-Pong balls when they form at leaf buds, or blisters or conical knobs when ...

The answer is yes. Leaf blisters are a common springtime curiosity on oaks and maples in Iowa. But 2009 has been a leaf blister bonanza, with far more blisters than I've seen in my 24 years at ISU.

Specialists also think that oak leaf itch mites feed on cicada eggs ... That’s when you notice raised, red areas with a small central blister. Other symptoms include: Itchiness (which may ...

The blistering summer of 2024 will soon be coming to an end, and that means fall leaf peeping can't be far behind. According to the Old Farmer's Almanac, leaves can change their color from as ...