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Crabapples In Crablandia Are A Dazzling Display! draper.15 Sun, 04/23/2017 - 21:18

The crabapple plot, called Crablandia in Secrest Arboretum, is located in Wooster, Ohio and will be in full bloom and full splendor, in the next couple of days.  With the onset of multiple periods of unseasonably warm weather, the typical bloom emergence time is about 2 weeks ahead of schedule.  The incredible display of crabapple flowers has traditionally been one of the most popular times to stroll through the Arboretum and experience the amazing fragrance, accompanied by marvelous views of flower petals.

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Erik Draper
Knotty Honeylocusts: A Diagnostic Conundrum boggs.47 Sat, 04/22/2017 - 14:13
Last week, while photographing calico scale (Eulecanium cerasorum) on honeylocusts (Gleditsia triacanthos) in a commercial landscape (see BYGYL Alert, Calico Scale is Puffing-Up and Pumping Honeydew, April 19, 2017), I came across two trees with numerous knot-like growths on the stems.
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Joe Boggs
Rusty Junipers boggs.47 Wed, 04/19/2017 - 20:03
Junipers in southwest Ohio are being garnished with tangerine tentacles and orange goo; the calling cards of rust fungi. The three fungi producing the colorful displays belong to the genus Gymnosporangium and each must alternate between a member of the plant genus Juniperus and members of the rose family (Rosaceae) in order to complete their life cycle.
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Joe Boggs
Junipers Garnished with Tangerine Tentacles and Orange Goo. boggs.47 Mon, 05/02/2016 - 11:23

Our wet weather this spring has triggered spectacular spore production by three types of rust fungi on junipers in southwest Ohio.  All three fungi belong to the genus Gymnosporangium and each must alternate between a member of the plant genus Juniperus and members of the rose family (Rosaceae) in order to complete their life cycle.  The requirement to cycle between two types of widely divergent host plants coupled with the rusty color of their spores earns these fungi the collective moniker of "heteroecious" rusts.

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Joe Boggs
Wilting Buckeyes boggs.47 Wed, 04/19/2017 - 18:17
Wilting buckeyes may sound like an Ann Arbor dream, but I'm not talking about our beloved Silver Bullets. I'm referring to the symptoms caused by the Buckeye Petiole Borer (Proteoteras aesculana) on its namesake host.
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Joe Boggs
Calico Scale is Puffing-Up and Pumping Honeydew boggs.47 Wed, 04/19/2017 - 16:43
Overwintered calico scale (Eulecanium cerasorum) females are now "puffing-up" and pumping out impressive quantities of clear, sugary honeydew in southwest Ohio. The appearance of the globular, helmet-shaped females coupled with complaints of trees oozing sticky goo makes this life-stage important for detecting new infestations. All other life-stages are much less obvious.
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Joe Boggs