This is my first attempt at a pollard. I started it in 2017. Pruned it for third time today (about every two years) Like
@Mick Dempsey oaks i made initial pruning cuts above / close to branch unions, it feels safer that way. However after maintaining them I wish I was braver initially and made heading cuts, I feel like better knobs would have formed. I think they would have been more spherical and easier to maintain, there also would be a lot less of them. Knobs are forming well with very little decay! There are just way to many of them, it takes forever to prune!