"La Puce" wrote in message
roups.com...



I think that's the mechanism for the fungis to move
outwards. The spores collecting are an option, an organic one, which
works. Off course there's the wind, hence the 1m sheet outwards.



Spores are light enough to be carried far more than 1m by the lightest
of breezes. Are you suggesting that if you can keep them from landing
within 1m of the ring, that is sufficient to prevent further growth?
--
Kay