8/12/2014 4:08 PM
I've had some issues with this on a couple greens as well. Where we wanted to solve the issue and not cut down the tree, we trenched between it and the green, and installed a 4' vertical steel barrier. Should last as long as my memory will go. We used doubled up roofing galvanized roofing steel. These were cottonwoods that would sucker a little, but more so rob the green of nutrients and water. So far so good. A few others have a lot of willows surrounding them. No space to put in a barrier. We've been nuking the shrubby type willows with Garlon, and then pulling the sucker up with hex plugger, cutting it out, and pulling as much from root zone. Time consuming, but effective. The only detriment to all this process has been the increase in ant activity on what I would imagine to be the decomposing main roots. Aesthetically, the removal of the cottonwoods isn't really an option just yet, but the willows no one will notice.