I have quite a few 15 gallon pots of Hibanobambusa tranquillans 'Shiroshima' bamboo that I potted 3 seasons ago and are ready to be planted. They are now reaching 10-12 feet in height.
Shiroshima is one of my favorite bamboo species with striking variegated (striped) leaves that thrives in our climate. They grow about 15 feet in height and make a great privacy screen.
These sell for $285 at Bamboo Giant (https://www.bamboogiant.com/product-page/shiroshima)