Seems like it would cause overlap and confusion, to me.
Bamboo growing has a forum
Bamboo woodworking has a forum
Bamboo composting has a forum
Reusing bamboo products has a forum
If we add a bamboo forum now each of those could end up in the bamboo forum instead but they aren't really related to each other at all.
A thread (topic) can be in more than one forum so even though bamboo topics would be all in one forum each one can be in additional forums.
So a thread topic about bamboo used for building would be in the bamboo forum and also maybe natural building or one of the construction forums.
and if the thread was about cooking bamboo sprouts it would be in the bamboo forum and in the cooking forum.
It's definitely a multi use plant!
"We're all just walking each other home." -Ram Dass
"Be a lamp, or a lifeboat, or a ladder."-Rumi
"It's all one song!" -Neil Young