The new growth on red robin plants are inclined to sag forwards and downward to the ground. My question is, should I stake them upright with bamboos before trimming the side of the hedging, or trim as they are. The only thing is if I trim as is, I will be cutting approx. 12 to 18 inches off any plants growing tip that’s leaning forward and down. It is a relatively new hedge and is only 3 feet in height and I wish it to grow up to 10 feet. Also, there is a dividing blackthorn hedge directly behind it, will it hinder/impact the red robin in any way? Is it necessary for it to be removed at this stage or can this be done later?