Hi i am new to the world of bamboo and have just recived some rysomes for green and black bamboo. i wanted to make a deck blanter that is 3 in one. i was thinking of making it about 6' wide by 2' accrossed and 12" deep the lady i got these rysomes from said that this bamboo would hit 20-30 feet tall. i want nice thick stocks but i don't really want them that tall so i was thinking that if i made the planters shallow the bamboo may not grow as tall? and i am not sure how to put drainage in this. any one with ideas or input that would be great