grooming a grove
I have a 5 year old grove of an all green variety of Phyllostachys. (I'm going to try and identifying it next spring from clum sheaths). Last year it just about doubled in area to about 35ft X 25 ft. Largest culms are about 3/4" thick and 15+ ft tall. Almost no sunlight penetrates to the ground. I would like to easily walk through the grove yet try to grow the biggest culms possible - is there any harm in cutting out most the lesser culms that are probably 2-3 years old and 6-10 feet high? Also, is there a downside to cutting out rhizomes which within the grove, arch out of the ground just enough to trip you? Thanks.