"bnd777" wrote in message
...
It could be though that you have sandy soil on a gravel subbase
these kind of areas are like a bog in the winter due to rising water
levels
but parched in the summer because its hard to keep adequate levels of
humous
in the soil


sandy soil and gravel base would not be boggy and humous has nothing to do
with moisture sounds more like clay holds the moisture in winter but dries
quickly and shrinks causing cracks in the summer