Hi I am wondering what to do with my new hedge. It has Ben planted a year now and is growing straight up and is very bushy at the base of the hedge. I was thinking I would trim the lower branches and tip prune the top I. Order to thicken the bush in the middle. My question is can you trim lower branches of this type of lily pillhy (grows to max 3m) an will this help thicken the middle of the bush or promote just more new growth at the bottom? The reason I want to trim the bottom is to give room to the ground cover which is s native rosemary. Any help of ideas appreciated by this novice gardener!