In article ,
Tim Watts writes:
On 07/06/10 08:57, Chris J Dixon wrote:
Having just extended a flower bed to incorporate what has been
lawn for 40 years, I am left with some pretty solid clay soil.

Gypsum is recommended as a soil improver, but appears to be sold
in garden centres as a proprietary product costing nearly £5 for
2.5 kg.

http://www.capitalgardens.co.uk/clay...er-p-6321.html

On the other hand, I can pick up a 25 kg bag of multi-finish
plaster for under £5, and AFAIK this is essentially the same
material.

Any reasons not to go with plaster?

No reason whatsoever.

Even better, if you can find a source of lumpy out of date plaster for
free (try asking around).

Yes - where about in the country are you?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]