Hi all

Its mushroom season here in Brittany and over the last few days a nice large
Fairy ring (one of several) has developed in the lawn.

http://members.aol.com/penphill/ring1.jpg

I don't mind it all that much but the grass has already suffered from this
years drought. Does anyone know if the mycaelium inside the ring, which is
about 7m across does any damage to the grass above it. I read that such rings
continue to steadily grow for years......

Phil