On 16/03/2019 17:01, Chris Hogg wrote:
OK, thanks both. It looks like my makeshift cold frame isn't going to
be a safe place for seedlings unless I can mouse-proof it!

what I have done in the past is to make squares of fine metal mesh
(Macsalvors sell it!) that sit on the top of the pots, you just bend the
corners down to stop them falling off.

I used to grow Helebores and the mice used to dig all the seed up and
hide them in all the other pots we had Helebores in everything!

--
Charlie Pridham
Gardening in Cornwall
www.roselandhouse.co.uk