Stephen Howard wrote:
On Sat, 28 May 2005 13:21:28 +0100, "Mike Lyle"
wrote:

shazzbat wrote:
[...]
, and the undersoil irrigation
I put in the greenhouse on the allotment, made out of some waste
pipe and fittings I rescued from a skip.
[...]

That's interesting, but counter-intuitive to me: what's the
advantage
of having the irrigation underneath?

Saves water.
Less evaporation.

A good reason. So you don't get a problem with the holes blocking up,
or over-enthusiastic roots getting in?

--
Mike.