Invasive trees threaten urban forests and native woodlands.
In today's Leaf Chronicle, Jeremy Meyer, city forester of Clarksville, TN, writes about invasive trees that are pushing out native species.
Meyer cites four trees as dangerously invasive in the Clarksville, TN, area. (This area includes my home, Christian County, KY, just across the state line). Meyer points out that these trees have brittle wood and are highly susceptible to weather damage, in addition to being invasive.
- Bradford Pear -- Pyrus calleryana 'Bradford'
- Empress Tree -- Paulownia tomentosa
- Tree of Heaven -- Ailanthus altissima
- White Poplar and Lombardy Poplar -- Populus alba and Populus nigra
I was alarmed at Meyer's statement that he has seen Bradford Pear establishing itself in woodlands along Interstate 24. It would be a great loss if even one native oak, hickory, ash, maple, etc., is choked out by a Bradford Pear.
This is part one in a series by Meyer that will list a dozen invasive trees. I am sure that the mimosa tree will be featured in one of the future columns. It is a weed tree in this area. It's extremely prolific, and it's hard to kill, once established. Its beauty does not make up for the problems it causes. I have one in my yard, so I know what I'm talking about.