Distance of apple trees for pollination

alfharris8

How close do apple trees need to be to allow for pollination if they are not self fertile? 
Thanks. 

Liriodendron

Someone told me that bees will fly up to a mile between trees - so they don't both need to be in your garden to get pollinated...

alfharris8

Crikey! That's amazing, thanks 

bertrand-mabel

It also depends on the type of apple you are growing.

Have a look at

https://www.rhs.org.uk/advice/pdfs/applepollinationgroups.pdf