Posted: 07/05/2016 at 15:24
A pollination problem will stop fruit forming, but wouldn't stop it flowering. And obviously no flowers means no hope of fruit. Are they young trees? Maybe Elstar is taking longer to get its roots down and get mature enough to fruit? We have 4 varieties of apple, all planted at the same time and in the same area, and they have all matured at different rates. 6 years on and finally all have blossom this year.