We've nearly finished this pool (on web below) which is 20 yards by 15. I
have looked at hundreds of pools and the planting round the edges and my
mind is always drawn to the exotic like those in ancient Egypt and Mexico.
I know I can't grow such things but there must be something that can be
grown that looks like these plants.
Someone suggesting bamboo, previously is something I thought I could use
hereabouts I have a nigra a large clump..I just hope it will move OK... I
am sure there should be plants that wave in the breeze. The spot is in
full sun from about 10am to 5pm and I'm hoping to be able to use solar to
work the pumps. It seems such a waste to let all this water overflowing
everywhere in this area... so we'll collect sky water as much as
possible.BUT plants I'm completely foxed. I don't want to put their feet
in the water just along the sides which are to be filled with backing
cement/stones and soil. Summer we hopefully can water the vegetables.

http://www.saveoursaxon.co.uk/whatplants.html