A friend has a huge stand of phyllostacus (spelling?) the one with black
stems, next to his pond/lake.

It is beginning to flower so will presumably die? Will this happen to
all other bamboos in the vicinity ( similar to ants swarming at the same
time in an area) or is the flowering local to one or two plants? He is
quite high up in the Chilterns, near Dunsmore on quite an open garden
(about 8 acres)

If it's flowering will the seed be viable and how best to propagate it
please.

Janet
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Janet Tweedy
Dalmatian Telegraph
http://www.lancedal.demon.co.uk