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Well, it’s only been a week or so since my last update but I have important new information.
And just like that, it is meteorological summer and it is very dry in most of Ohio. Not the way I like to ...
We are moving right through the last part of spring and nearing the beginning of meteorological summer. Isn’t it interesting how the first day of meteorological summer roughly corresponds with the Mem...
Leaflet Drop on Ash
MAY 18, 2023
Native ash trees in southwest Ohio are showing tell-tale symptoms of Ash Anthracnose. The disease is produced by the fungus, Plagiostoma fraxini (syn. Gnomoniella fraxini). As the specific epithet i...
Leaf Drop on Sugar Maple
MAY 18, 2023
The leaf-shedding handiwork of the Maple Petiole Borer (Caulocampus acericaulis, family Tenthredinidae) is becoming evident in southwest Ohio. This non-native sawfly was introduced into the United S...
Sticky, Dripping European Beech
MAY 18, 2023
I’m a fan of beech (Fagus spp., family Fagaceae) from American beech (F. grandifolia) to European beech (F. sylvatica) to beechwood-aged potations (F. beerlignumia). Members of the genus have long b...
Sticky, Dripping Oaks and Ghost Scales
MAY 18, 2023
I recently visited a commercial landscape that had 5” – 6” DBH bur oaks (Quercus macrocarpa) with their newly expanding leaves speckled with clear, sticky honeydew. Twigs and branches had a dark, di...
ODNR recently held a workshop in Spring of 2023 on Hemlock Wooly Adelgid(HWA) and Elongate Hemlock Scale(EHL) at Penitentiary Glenn in Like County. So as a horticulturist or homeowner, what should y...
Oak Apples, Woolly Catkins, and Leaf Blisters
MAY 18, 2023
Oak Apples, Woolly Catkins, and Leaf Blisters are appearing on oaks belonging to the red oak group in Ohio. While the galls may be very apparent, they cause no appreciable harm to their oak hosts.
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Lawns are greening up and growing like crazy. You may be tempted to employ the technique titled ‘No Mow May’. But what’s wrong with letting your lawn grow for the whole month of May without cutting ...
“Concrete†Mites: A Threat to White Clothing
MAY 18, 2023
So-called “concrete mites” are making their annual appearance in southwest Ohio. These tiny, fast-moving bright red mites scurry around on sunny surfaces such as picnic tables, patios, sidewalks, co...
