Bamboo are found in the Bamboo Forest . When the bottom block is mined the entire tree falls. Bamboo trees yield bamboo stalks instead of blocks of raw wood. The stalks can be used as sticks or to craft Bamboo thatch blocks. There are no bamboo slabs or stairs.
When bamboo stalks are planted on dirt or grass, they behave almost like sugar canes, but they do not need water sources.
The bamboo stalk grows until it is 3 blocks tall, it will not become a bamboo tree. In 1.9.4 the texture was changed so they are now more green rather than yellow.
Raw wood: Bamboo
Planks: Bamboo Thatch (has to be crafted)
Crafting: no slabs, no stairs