Plants for pond stone edging ?

[robg]

I've a 10 year old pond with slab edging.  The slabs are set on a cement base, but are at a level that the top-up system for the pond just reaches that cement base level, so a smidgen of water reaches the base of the slab joins every so often.

The grass from the lawn has occupied this in the past  , but I grew some mimilus cupreus last year and was looking for somewhere for it, and realised that these slab joints would be great.  I'm cleaning the joints out and putting in a piece of slate to try and stop the grass getting through again (fat hope I suspect!), but what else as a very small plant that would like wettish feet could I add ?

Thanks
Rob

[ranunculus]

Hi Rob,
The delightful mat forming daisy, Celmisia bellidioides MAY take to this kind of situation as it grows in the spray areas of waterfalls in New Zealand, is quite hardy and boasts lovely white flowers.  Certainly merits a try.

[robg]

Thanks Cliff - if you've got it growing in Lancashire then I've a chance near Edinburgh.  I also see it's appeared in the last two seed lists so I can get it there.

Cheers
Rob