"Jaques d'Alltrades" wrote in
message k...
The message
from iljunk (Pen Phill) contains these words:

Thanks for the replies getting rid of the fungi-edible or no.
Out
of 500 sq
metres or so of drive laid it's the only bit affected. I suppose I
shall just
have to carefully dig them both out and refill the hole with fresh
tarmac. I am
rather surprised they could push it up....lowly thing.

Think hydraulics.

Yes. The osmotic pressure iin a plant is more than ten atmospheres.

Franz