By Bridgelea
United Kingdom 
Can you recommend a fast growing tree for a south facing spot, to plant against a wall. The garden is overlooked & we are looking for a tree sparce at the bottom & lots of foliage at the top?
25 Aug, 2013
Answers
Eucalyptus, Paulowina, Trachycarpus and Amelanchier Lamrckii come to mind.
25 Aug, 2013
Most trees are fairly slow, but you could try Eleagnus 'Quicksilver' which gets very bushy. It's more often grown as a shrub, but doesn't mind being pruned, so you could keep cutting back the lower branches (technical term: raising the crown)!
Whitebeam grows fairly fast but gets huge.
25 Aug, 2013