I struggled to adjust the water sprinkler, and found the spray would bounce against the tree trunk, and cover the lawn portion to my liking.
Should water be kept away from a 9 year old tree trunk, since the following link shows a gentleman showing how a tree trunk is intentionally watered, which must be an exception.
Hello: thank you for your interesting question. Most of us gardeners at one time or another have struggled with orienting our sprinklers -attempting to irrigate the plants that need water while avoiding watering others that don’t. Today that goal is more important than ever as we try to limit the use of our clean water- a valuable commodity.
There may be some risk to a tree if the trunk is routinely watered in exactly the same place frequently (several times a week), especially if the water lands in a fork of the tree, at its foot or in a previously injured area. This risk would more likely occur with an automatic irrigation system, but it is possible that a manual sprinkler system set up in a permanent spot would achieve the same results. If the bark does not have a chance to dry between watering, fungi could invade the tree bark and begin the process of wood rot. Wood rot. To be on the safe side I suggest you don’t use your tree as a back stop in redirecting your irrigation spray.
While most people don’t intentionally water established trees, in times of drought, even deeply rooted trees benefit from extra water. And thanks for the photo of the Tree Fern. Tree Ferns are ferns first and foremost and as such love moisture. They do not have bark as in a traditional tree but their bark is a collection of roots benefiting from watering. Tree Fern