Post by reed on May 3, 2019 7:27:59 GMT -5
my experience with cutting down black locusts is that, yes, they'll come back as (very spiny) bushes, but they'll also send up suckers from the roots at some distance from the trunk - they won't stay in the rows they're planted in.
I think it may be true that they fix nitrogen. Five or six years ago my back garden was a thick black locust thicket. Soil is typical clay like the rest of my place but stuff grows there really well. I had to plant around stumps for a long time, finally the roots rotted and softened enough I was able to dig out the last of them last fall. Other live roots are still in there though and keep popping shoots here and there.
I guess I could call this my black locust garden. Outside perimeter is mostly tall living stumps serving as fence posts and providing shoots for poles as well as soft fresh growth for compost and mulch. Yes there still are plenty of thorns, I don't go barefooted this garden. The area is on a bit of a slope so larger logs serve as downhill edges of a slightly terraced effect to the planting lanes. Smaller logs became fire wood. North of the fenced garden is still a somewhat managed locust thicket getting smothered in grape vines.
I loves my black locust trees, and the flower clusters are a treat prepared similarly to morel mushrooms.