Posted: 20/02/2016 at 11:42
Keep mint contained - it's just like the garden kind - takes over!
Carpenter - have you got a pic of the wider area - it will give us an idea of what other planting you have. Grasses are excellent near ponds - Carexes (avoid pendula though) and Hakonechloa are ideal. If you have them near the pond edges they'll hang over and soften the edges. For height - you can use Irises and the small bullrushes. The chrysographes irises are ideal - they like damp conditions. I have Equisetum in mine as well - great for anything emerging - like damselflies. A few easy pond plants like Caltha are good for cover for wildlfie. They'll grow in boggy conditions as well as being marginals.
You can gradually add planting if you want to connect the pond with the surrounding garden - that's always the best way with a wildlife pond. It should look like it's in harmony with the rest of the plot.
Have a look at some of the online specialists - you can pick plants that suit the conditions and look you want. Lyn's recommendation (Waterside) is the one I've used often. They do a good selection of waterlilies too - to suit all sizes of pond.