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Wild Parsnip (Pastinaca sativa L., family Apiaceae (previously Umbelliferae)) is in full bloom in Ohio with recent hot temperatures accelerating seed development, particularly in the southern part o...
Guy Meilleur on Reduction Pruning
JUN 19, 2022
Bronze Birch Borer Remains a Threat
JUN 14, 2022
Bronze Birch Borer (BBB) (Agrilus anxius) is native to North America and only targets trees belonging to one genus, Betula. Historically, BBB ranged across the northern U.S. and southern Canada whic...
Common Milkweed and its Doppelgänger
JUN 10, 2022
This can be a particularly tough time of the year to learn plant identification. With the warm temperatures and plentiful rainfall, vegetative growth is rapid, and we’re often left looking at a wall...
Here is the forecast, as of this writing, for the period June 13-16, 2022, the last full week of spring according to the astronomically based calendar. People often snicker when I make a big deal out ...
Can you believe it is now summer? Well, meteorological summer at least. While the calendar, based on the position of the sun only, says we have 3 more weeks of spring, those of us in horticulture know...
The Japanese Maple Scale Challenge
JUN 2, 2022
Oystershell Scale has long presented a management challenge given its wide host range coupled with limited insecticide targets. However, this armored scale has been largely supplanted by the Japanes...
European Elm Scale Create Dripping, Sticky Elms
JUN 2, 2022
European Elm Scale (Eriococcus spurius (formerly Gossyparia spuria)) females are dripping sugary, sticky honeydew in southwest Ohio. This is one of the “felt scales” (Family Eriococcidae) so named b...
Monitor Now to Stop Bagworms!
JUN 2, 2022
Look closely at trees and shrubs festooned with last season’s Common Bagworm (Thyridopteryx ephemeraeformis) bag-abodes. Overwintered bagworm eggs are hatching in southwest Ohio meaning the “bagworm...
Hydrangea Leaftier
JUN 2, 2022
The Hydrangea Leaftier Moth (Olethreutes ferriferana, family Tortricidae) is so named because the caterpillars tie together developing leaves on wild and cultivated hydrangeas to produce oddball “le...
