Galls on Azaleas

Early today, a NW Ohio resident called the Extension Office concerned about the leaves on her azaleas. She described the leaves as beginning to appear contorted and that there were growths that were thickening. The problem seemed to be getting worse and covering more of the leaves. The homeowner had several plants near the house's foundation and another plant along a sidewalk. All were exhibiting similar signs and symptoms, but some were more infected than others. 
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Amy Stone

What are Your Plant Pest, Disease, and Weed Management Challenges?

The Inter-regional Research Project #4 (IR-4 Project) conducts biennial surveys to learn the pest, disease, and weed management challenges faced by the Green Industry. The survey results are used to guide research and to facilitate the registrations of conventional chemical pesticides as well as biopesticides.
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Authors
Joe Boggs

Picking Up Pawpaws.. Blooming

As I was in the throes of cutting and baling my overgrown lawn last week in Northeast Ohio, I was pleasantly surprised to see a profuse flower display on my Pawpaw (Asmina triloba) trees!  I can’t recall ever seeing so many buds and blooms on the tree, especially the numbers which were noted this season.  Now some may opine that the green, brown fuzz covered bud scales are the reason most people ignore and consequently, miss the real floral display, because the buds seem so uninspiring. 

 

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Erik Draper

The Wrath of Grapes

The bristly, lumpy round galls produced by the grape phylloxera (Daktulosphaira vitifoliae, family Phylloxeridae) may dominate our perception of galls on grapes. Indeed, these peculiar plant structures are a common feature on the lower leaf surfaces of wild grapes (Vitis spp.) in Ohio.
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Authors
Joe Boggs

Dripping Tuliptrees

Liriodendron tulipifera is showing off its tulip-like flame-based flowers in southwest Ohio. This has long been one of my favorite trees even though I'm never quite sure what to call it or exactly how to spell it. I'm not alone.
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Authors
Joe Boggs

Annual Maple Leaf-Drop

Finding large numbers of green leaves littering the ground beneath maple trees wouldn't be a surprise given the recent high winds and heavy rains over much of Ohio. However, you should take a second look at this time of the year for short petioles on the shed leaves and broken petioles remaining attached to the tree. Both are tell-tale symptoms of the maple petiole borer.
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Authors
Joe Boggs

Be Alert for "Mud Chimneys"

The rise of "mud chimneys" produced by burrowing crayfish has long been one of my favorite harbingers of spring. These unusual mud structures are often described as looking like chimneys because of their cylindrical shape and large, round hole in the center. No other animal produces such unique mud structures in Ohio.
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Authors
Joe Boggs

Wilted, Rolled, and Mined Buckeye Leaves

Buckeye and horsechestnut tree canopies tend to be remarkably free of insect pest damage except for the depredations of some general defoliators. However, if you're cruising Ohio woodlands this spring, you may run across three types of leaf damage. None of the damage appears to cause serious harm to overall tree health, but the symptoms can be obvious.
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Authors
Joe Boggs