Pam Moore writes
On Fri, 2 Oct 2009 11:26:59 +0100, K wrote:

I've returned from a few days away to find that one 'patio type' tomato
out of a pot of 3 has wilted/ The other two are looking healthy.

There's no sign of any problem with the wilted one apart from the fact
that all the leaves have wilted - no spots discoloration or anything. It
looks exactly as if I haven't watered it - except, of course, it's in
the same pot as two perfectly happy plants. The fruit on it still looks
healthy. It's in a greenhouse, not outdoors.

Any ideas?

Was it on the sunniest side of the pot, and could have dried out more.
If you've been away could they have dried out possibly?

Not dried out (and you'd expect the other two to suffer as well. The pot
is only about 10 inches across, it was on the shady side of the
greenhouse, and, in any case, I don't think we had any sun while I was
away ;-)
--
Kay