Quote:
Originally Posted by Sacha[_4_]
I wouldn't chuck it out for at least a year, maybe two. Some experts
say it will go down to -25C, others say -18C! They don't like to be
waterlogged, although they grow well beside water but like to be just
moist. So make sure it's able to drain by lifting the pot up off the
ground by a couple of inches and don't let it dry right out.
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These temps are most likely to be survived if the plant is in the ground, not in a pot, which can freeze right through. But it is normal for black bamboo to defoliate even in an average winter in many parts of Britain. But don't expect much releafing action until midsummer - they are late to put out new leaves.
The reality is that black bamboo isn't a very a suitable subject for pot cultivation. You can keep it alive, but it's a lot of work. And keeping it moist but not waterlogged is difficult in icy weather. Put it in the ground and you can almost ignore it - it wouldn't mind a bit of water in a very dry spell though.