Incorrect planting can lead to the production of girdling roots below the soil grade. Girdling roots are lateral roots that emerge at or slightly below the soil surface and cut into at least one side of the main trunk. A…
Tree Research
Blog Archives
Information from scholarly studies at the Bartlett Tree Research Laboratory.
The Science Behind Fall Foliage
Why do leaves change color in the fall? A good start to answering this question is to look at each of the pigments involved.
Posted in Tree Research
Boosting Tree Defense Systems
Natural defense systems enable trees to ‘fight back’ when they’re under attack from pests or disease or facing stress from environmental conditions like drought. Even with these defense systems in place, trees will decline when conditions become too severe or…
Posted in Pests and Diseases, Tree Research
New Beginnings
Here in the South, Mother Nature is busy showing off with spring in full swing. She is in high gear with blossoms and buds bursting and pollen beginning to take wind. It’s hard to imagine someone not being enthralled with…
Posted in Tree Research
Unusual Growths on Trees
Unusual is one of the best way to describe galls on trees. These abnormal plant growths are found on leaves, twigs, and branches. They range in size from tiny lumps to large, complex protuberances. Galls may present as bumps on…
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