I am creating some roughly 1 meter tall hugel/swaling mounds that runs basically east west on basically level land, so the swaling will be a bit further apart than on a slope. I am planting some fairly large potted stock (5 gal and larger) and I am worried that there will not be enough soil depth to plant the trees directly into the mound. So my questions are as follows:
1- If there is only 15-18 inches of soil on top of the wood, and a potted tree has 16 in or more of root depth, is it more appropriate to dig at the front edge of the mound than directly into the top of the mound? Will hugelkultur still benefit a tree at the front of the mound? I would prefer not to trim roots, but am concerned about placing roots directly around the buried wood.
2- I have seen sepp's drawings and videos of his 2 meter hugel beds and it seems like the larger trees are planted in-between the mounds, so should I push the swaling closer together and try it that way?
If anyone has any experience with this issue, I would love any advice.
This is also my first post, I did some searches and didn't see this specific question, but I am sorry if this has already been asked.