but in the same large estates, in the walled kitchen gardens, fruit trees would still have been espaliered,and also fan trained against walls;-)

So what the Martins are doing is creating a pretty but prudent and prosperous place to live. It is, in fact, a typical English cotage garden,where fruit and vegtables are grown in conjunction with ormamental plants. Space was of prime importance,and so a cottage garden not only looked pretty but was productive in the most practical sense, too.