On Tue, 2 Mar 2004 10:56:28 -0000, "David W.E. Roberts"
wrote:

All this is fascinating :-)

However - how big a pot should I use?

Based on the explanation offered by Kay, I would think you should use
a pot only slightly larger than the one you use now, and repot into
gradually larger pots over the years, rather than jump straight to a
giant pot. Or is this just a conspiracy to makes us buy more pots? £5
a throw for terracota! Ouch.