Starting my Black Bamboo (P.nigra) this weekend
I'm hoping to get a little advice and/or comments here.
I have a 2 story house overlooking my back yard & patio. To make matters worse, they installed some super bright down-lights in the 2nd story eaves that wash out my whole backyard (including bedroom windows) and they are set to stay ON from dusk till dawn. It really ruins the ambiance of the patio area in the evenings, especially the Hot Tub area! So A hedge of Bamboo along the fence line is in order.
I've prepared a spot along the fence, and intend to trench and apply some 20" flashing to help keep the bamboo on my side of the fence. Our soil is pretty heavy clay so I hope 20" is deep enough. The trench will be about 12" from the fence so I can still get back there to check on rhizome growth. My first question is whether I should fully encircle the bamboo grove with the barrier? Or just put it along the fence line and curve the ends inward toward my property? The bamboo grove will be about 50' long and about 3'-4' deep. My side of the bamboo is lawn for about 15' to my house. I mow weekly during the spring/summer/fall, will that be enough to keep it contained? If I go that route, will it do any damage to my house foundation, patio, or sidewalk? I really dont want to have to trench all the way if I can keep from it (It's on the easement with lots of underground utilities, so I have to do it by hand).
Next, what is the fastest way to get a good 15-20 foot tall grove to block out the house? I have (2) one year old potted P.nigra bamboo plants that are pretty thick, but only about 18" tall that I will put in the ground. How long would it take those to fill in that area? or should I buy 4 or 5 more plants, and if so how big should I get them?
Thanks for any help, I really appreciate this site!