After 2 years, I finally got round to digging the hole to plant a dwarf apple tree. The top-soil in the section I selected is in good condition but after about 2 feet down, it started to become about 50% soft clay. Does that mean I'll have to site the tree somewhere else. Most plots on the site have varying amounts of clay - some have lots, but there are other dwarf trees around the site that are producing. Do you think they just got lucky where they planted, or is clay not a problem for the rootsif the tree is either dwarf or cordon.
Many thanks for the comments.