Locust is native here, so not an invasive species. New shoots come up from the root crown instead of buds on the main stem, that's fine. If it came up from elsewhere like bamboo, it'd be a problem. But locust has no rhizome, so it's not of any concern. If a stem comes up a bit too far from the main stem, I'll just summer cut it and make it into biochar. Summer cut stems usually don't return. Winter cut stems return as coppice the following spring. The roots of locust do have nodes with symbiotic bacteria in them. Same as beans and peas do. And gypsum can help it sequester more atmospheric nitrogen. As I want a nice thick animal-proof hedge, I don't mind root crown stems. I have to plant about 8,316 trees if I'm making a standard hedge. It'd be a boon to me to have a wide base of stems so I don't have to plant 3 stems per foot. Forcing the locust to form multiple stems from the crown means I only have to plant a single row instead of 3.
2,772 locust trees is a lot less work to plant, and a lower cost. I have seeds for 150. By the time it's ready to be laid, my persimmon copse will be ready to provide stakes and binders. I'll also be thinning the hedgerow that exists, to let in more light for my laid hedge. It's wholly made of standard trees. I could lay it, but there'd be nowhere to lay it down and with the size of the trees, it would be dangerous. So I'll thin the southern side, and let in light. I have to hand dig a drainage ditch, or more correctly, repair one from the 1940s. It's been silted up. I'll save that work for the fall season when there's no biting flies. But then the ditch would be between the hedgerow and the barrier hedge. Here, unlike in Europe, the ditch is not considered the boundary line. Ditches have to be on your own property. So the mud dug from the ditch will form a low mound into which I will plant my hedge. The space between the laid hedge and the hedgerow will make a corridor for wildlife, but exclude them from my crops. I plan to remove and recycle the old wrought iron fence which is a hazard at the moment. I'm formerly a blacksmith by trade and currently a hobbyist, so I intend to make things from the fence myself. The fence is the boundary marker so I have to replace it. It's been there for 90-140 years based on the type of posts it has which were invented in the 1880s and went out of style in the 1930s. The sale of things made from the old fence will finance a new fence and the hedge.