Got a 50'x5' roll of fence for fruition trees at camp. I think 5' is high enough to keep deer out. How big a circle should I put around them to keep deer from eating them. The trees are 4'-6' semidwarf apple trees
I use 5' fence on my trees as well and it is plenty high to keep deer off them. I did a 3' diameter cage which equal 9.5 linear feet of fence. I found this to be sufficient and would give you 5 cages. A 4' diameter cage would be 12.5 feet of fence and 5' would be 15.5' of fence but I like the 3' myself. Good luck with your efforts!
3' is to small at a 5' height. these trees need to branch out. I also used 5' tall on some. but after a year or so, the trees were growing through my fence, and I have had 4' and 5' diameter circles of fence. you can also get a tin snip, and in 4 different spots, clip about 18" down from the top and bend fence flaps outward / downward, like tulip petals. this has worked well for me, I leave points sticking outward to discourage the deer.
I would go at least 4' diameter. If you have bears pick your fruit off of them, before they do. I had several trees that finally started producing a good crop of apples after 5 or 6 years and bears destroyed all my cages and trees.