I've got a wild olive tree in my yard. I believe it is a https://fr.wikipedia.org/wiki/Elaeagnus_angustifolia . I absolutely love it and it is the main feature of the yard.
The thing is, after about 7-8 years, it seems to want to reproduce. A lot. New trees are spawning around its root. At first, I cut them.
Seeing this would not stop, I tried letting a new one grow, hoping it would stop it from growing new ones. It didn't. See below for picture of the tree, the bunch I let grow and the multiple new ones.
I would like to keep the large one I've got. I don't mind having another one grow. I would like it to stop trying to grow new trees. How should I go about it ?
Location is Montreal, Qc, Canada, if it makes any difference.