Quote:
Originally Posted by AL_n
Thanks to all for the replies. Is there a 12-ft tall bamboo?
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Plenty.
And also there are a few well-behaved bamboos that don't need restraint. These are "true clumping bamboos". Don't believe any bamboo seller who says something is clumping, believe only those you have researched and know to be true clumping. These are, for cultivation in Britain, really only Fargesia and Thamnocalamus spp.
A bamboos such as Fargesia murieliae "Jumbo" will grow to 12 ft pretty reliably. However it has a tendency to flop over, hence its common name fountain or umbrella bamboo, so you need to tie some strings around it to keep it more upright.
Several other members of these families will do the trick, if you can give them fair growing conditions.