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
Read More
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
Read More
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.
Read More
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
Read More
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,
Read More
Dr. Dirr’s Tree Spotlight: Acer triflorum – Three-flower Maple
A beautiful maple, resoundingly/photogenically magnificent in shades of orange and red in autumn. Colors long persistent, from initiation to the crescendo, easily 3 to 4
Read More
Dr. Dirr Tree Spotlight: Thuja occidentalis-Eastern Arborvitae
Dr. Dirr’s thoughts on the Eastern Arborvitae: Not quite sure why I never fully respected this soft-textured needle evergreen but an epiphany occurred during a
Read More
Styrax japonicus-Japanese snowbell
Beyond redbuds, Cercis, dogwoods, Cornus, flowering crabapples, Malus, and magnolias, Magnolia, there are precious few genera which offer significant cultivar diversity. Within eastern redbud, ~35
Read More
Dr. Dirr Tree Spotlight: Catalpa speciosa, northern or western catalpa, down but not out
Catalpa speciosa has never been commonly utilized in cultivated landscapes, yet somehow occurs in off-the-grid locations from Maine to Florida to the west coast. The
Read More- 1
- 2
Recent Comments