How many trees should go against a fence in a back yard?

Bradford pears aren't heardy with the wind we get. Split and blow over once full grown.

Think twice about placement next to a fence unless you are doing an espalier tree. Once trees reach maturity, they could be compromising the fence itself. The house I currently live in had poorly placed trees and I had to pay to remove them. They sat right against the fence and were compromising the structural integrity of the fence and since they were my trees, it would have been my responsibility to pay for the repairs.

Be careful with placing trees next to fences. Consider hardy bushes.

I don't suggest Bradford pears as they tend to split at the trunk over a few years. Try dogwood or a native tree for your area. Plant them the recommended distance apart (you'll need to measure your fence and come up with an estimate).

I'm answering the question of how many trees to plant against a fence. Look at the future, how big will the trunk be? If you plant them too close to the fence, they will mess with your fence. Will the branches take over your neighbors yard and his trees. Wish my neighbor had thought of this.

I belong to a plant group and just read a thread on Bradford Pear. So many said never plant them. They aren't edible, make a horrible mess as they weaken as they grow (lose limbs) and the worst part is they smell like "dead fish" according to some. I know flowering trees are pretty but you may want to consider another. Check out a plant group😊 good luck!

https://m.facebook.com/groups/623997204362467?view=permalink&id=1957996817629159

Thanks for your response

I planted English laurel along my fences for privacy. They make a beautiful backdrop for your flowering plants and annuals. I'd gathered cuttings from a neighbor who was pruning his laurel hedge. I cut a notch a couple inches from the bottom of each stem and put them in water...and totally forgot about them for a month or so. When I came across them again, the cuttings had all rooted, so I planted them and crossed my fingers. A longer, less expensive, patience-required process than buying big plants, but they eventually filled and do the job.

Pyrus calleryana, or the Callery pear, is a species of pear tree native to China and Vietnam, in the family Rosaceae. It is most commonly known for its cultivar 'Bradford', widely planted throughout the United States and increasingly regarded as an invasive.

5 fast growing privacy trees https://www.youtube.com/watch?v=C7GWpHz40z0