This will not help you with flower borders, but a 100+ year old map drawn at
6 inches to the mile by the Ordnance Survey would show the trees fairly
accurately (I've even seen a tree stump identified as such in a field on one
map) besides being fascinating: so go to http://www.old-maps.co.uk/ and
download a free map of Salford (but you did not say which one!).

Everybody who reads this will enjoy wandering around

Geoff