Growing Arisaema

[Wills, Simon]

Hello Jim

>>Have you really seen arisaema tubers rot on the bottom and then survive? My
>>experience is that once rot sets in, the arisaema is a goner.

It is sometimes possible to save them, or if not the main tuber, at least
give them time to form off-sets if the species does, by cutting out the
rotten parts and dusting with sulphur powder.   I had a badly rotted tuber of
A. intermedium in a pot, discovered to be rotting when I took it out for the
winter last November, which I dried off and then potted up last spring.
This month I looked again and while the old tuber had gone completely three
offsets had formed from it.

This has happened in previous years (I cannot remember which species were
involved - Himalayan certainly) so it is worth giving it a try.

Simon Wills.