Phyllostachys Nigra Henon, Giant Grey Bamboo #1 Size Live Plant The Phyllostachys nigra 'Henon' is a giant timber bamboo that grows up to 65'. It is extremely cold hardy, down to 0F. Fast growing. The last picture is an example of the plant that you will receive. The plant that you are purchasing is 1-2 years old, about1'- 2' tall, grown in a #1 size pot, which is removed for shipping. You will receive your plant shrink wrapped.