by Carolyn Henderson
Three months ago, nine members of our TMN chapter met Cliff Tyllick at Wilson Ledbetter Park to learn how to girdle an invasive species of tree. The Glossy Privet was introduced to Texas landscapers from China. It is evergreen, produces flowers liked by pollinators and grows prolifically, and it’s an invasive species.
It’s invasive because it knocks out native trees because of its rapid growth, and it “steals” pollinators from native Texas wildflowers. Pollinators find the big tree’s flowers easy to access. It often takes a little more work to find the native Texas flowers. Without pollinators, the natives die out.
Tree girdling is a method of killing trees without herbicides or the noise of chainsaws. It is used a lot in the nature preserves in the Austin area. Since there are quite a few Glossy Privets in Wilson-Ledbetter, we brave nine thought we’d give it a go. In summation – it’s difficult to girdle a tree. It’s not overly complicated. It requires a lot of physical action.
Sunday, I went to the park to check on the progress of our girdling. I am unsure whether it’s succeeding or not. We worked on three clusters of trees in three groups. Two of them had 3 or 4 “trunks” and were completed. The third group had eight or nine trunks, and a few of those were left untouched.
The uncompleted one has dead branches at the top of the trees, but I’m not sure if that’s from girdling or leftover damage from the freeze of 2021. The other two have a couple of dead branches, but new “trunks” are growing up from the ground. There are a few growing below the girdling area, but I don’t see any new growth above the girdling.
Cliff said it would probably take a year to completely knock them out. To hasten it along, they need a little work which isn’t uncommon, I’m told. For those who want to give our project a little care, I’m going to schedule another morning to get together and help them along.
Ultimately, we’ll get them down one way or another. Then we plan to plant Eastern Redbuds to replace them.