Elephant ears of any kind would be great there. They can do well in almost any setting from pots, to an aquatic setting, fully submerged in water. Plus they would add a bit of tropical air to your fountain area, if that appeals to you. They can also tolerate both full sun and heavy shade. They are very adaptable.

If you are looking for something with a lot of color go with Impatients (sp). They will grow in water alone, don't even need dirt! Cannas also like it wet, and Spider Lilies. Hope this helps!....PC

Also Siberian iris, Lousianna iris, Lobelia (cardinal flower), Monarda, Spiderworts, Arums. Once you get started, the sheer volume of plants that prefer those conditions will amaze you! Go look at some marshland, there's an amazing diversity of plants that like those conditions.

Thanks everyone - I have a Lobelia that I had planned to put there but I haven't seen it appear yet. Our dwarf crested iris are all over the road this year so I dug some up and put them nearby but not in always-wet soil. There are 2 pots of impatiens at the fountain and they seem very happy; survived the recent frost just fine. Hope to get some more additions at the plant swap May 21. Thanks again -
Karen

Hi Karen:
I plan on bringing some horsetail reed to the swap--it likes it soggy or not, potted or not (though is invasive). Can overwinter in the pot outside, too.

Claudia