Dr. Dirr Discusses Quercus virginiana- Live Oak
Bonnie and I spent a few days at Hilton Head during the week between Christmas and New Year’s. At our fourth-floor condominium, the view from
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Salt Tolerance in Woody Plants
Michael A. Dirr HMI requested a brief discussion on salt tolerance in woody plants. I started my career at the University of Illinois, Urbana, in
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Cornus officinalis-Japanese Cornel Dogwood
Cornus officinalis-Japanese Cornel Dogwood. Michael A. Dirr The Japanese cornel dogwood is a beautiful small tree, the yellow flowers borne on spur-like naked stems months
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Dr. Dirr Discusses: Aesculus pavia- Red Buckeye
The red buckeye is among the most beautiful eastern North American tree species, especially in flower, when the brilliant red panicles glow in the woodsy
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Dr. Michael Dirr’s latest findings: Chionanthus retusus- (Chinese fringe tree)
Chionanthus retusus– Chinese fringetree Michael A. Dirr In 2018, I was asked to assist with our county’s (Oconee, Georgia) tree planting project for a new
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Dr. Michael Dirr’s Latest Findings: Magnolia Virginiana- Sweetbay Magnolia
In previous tree profiles, I discussed Magnolia acuminata and M. × soulangeana and herein highlight an increasingly important landscape species, M. viginiana. It is becoming
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Dr. Dirr’s Spotlight: Acer Pseudosieboldianum – Korean Maple
Certainly, easy to become monochromatic about small maples when Acer palmatum and the numerous cultivars are readily available via garden centers and mail order sources.
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Dr. Dirr’s Tree Spotlight: Quercus Lyrata-Overcup Oak
The overcup oak, Quercus lyrata, languished in landscape obscurity until the 1990s when several Georgia nurserymen realized and developed its potential. The University of Georgia
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Dr. Dirr Tree Spotlight: Magnolia x soulangeana- saucer magnolia
The hope of spring is tethered to this species and the many cultivars. Difficult to imagine a garden, park, campus, golf course, city street, commercial
Read MoreDr. Dirr’s Tree Spotlight: Liriodendron tulipifera (Tuliptree)
From the arborists’ point of view, the tuliptree has more than its share of liabilities including excessively fast growth, limb breakage, drought-induced premature leaf abscission,
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