Posted: 01/05/2016 at 10:19
i would cut off all that new growth on the tops, I planted mine five years ago, cutting six inches off the tops at planting.
Dont underestimate the growth rate, they will be up very quickly, once cut down, pinch out the tops and side shoots, as you see them.
i think they are a bit close to the wall, in a few years the trunks will be touching the wall and the green will be over the wall into the street, where you will need to cut them back, that will make it very near to the trunks.
Heres mine last year, after just four years of being planted. They've been cut several times and pinched out. It's about three foot in depth and six foot high.