see attached pic. thinking of a pleached hedge above shrubs running all the way along the back of my garden. this would cover the unsightly mix of fences etc. Would need to be evergreen, flowers are a bonus and love a bit of autumn gold or red but that is only deciduous trees isn't it?. How much are we talking roughly?....ideally would want it putting in by a gardener to reduce the risk of them dying but could do it myself possibly...is there anything more difficult than planting a normal tree?. Once planted how much maintenance do they need? what type of tree is best? Thanks in advance