I’ve always wanted to be a landscape architect. Here is my latest project at a friend’s house two blocks from the Atlantic Ocean. There is a salt marsh across the street.
What I already know how to do is grow midwestern plants in black dirt. Now I am going to try to grow perennials like hosta, iris, and daylily in something like sand. The plan is to add enough organic material to the soil so perennials will grow.
Now my shovel has hit something hard at the corner of the building–it’s a huge concrete disk. Usually I would just remove something this size since the plants’ roots can’t get through it, but is this something structural? It looks like it should be under the square cinderblock behind it that the porch rests on, but it’s just loose. Maybe it’s supposed to keep the cinderblock from moving forward? I suppose the thing to do is just leave it covered up the same way as I found it and plant something with shallow roots above it, but it would be nice to know its function. (Click to enlarge)
Also I am told that the topsoil here just blows away. Not sure how accurate this is. So I guess I have two questions–how to keep the porch from falling down and how to keep the dirt from blowing away.
UPDATE: Here is a “during” and “after” picture. I added about an inch of sphagnum moss and a few bags of topsoil to the top and worked it in with a shovel, then used the rest under the plant roots mixed about 50-50 with the sandy soil already there.
Here is another view of the piece of mystery concrete under the corner of the porch. I’ve changed it to grayscale to try to make it more visible. The porch itself rests on a square block. The block looks like it should rest on the round thing, but the round thing is completely loose, although the edge of it is under the block by about an inch.