I have a waterfall in my garden that allows for plants to be set out at the top of it near the running water. My problem is that the plants I have used keep drowning, and I have no way to cut off the water flow without stopping the waterfall. Are there any plants (small, please) that thrive in areas of abundant moisture?
Good flowers for the rim of a pool or waterfall are astilbes, cardinal flower, Japanese and Siberian irises, loosestrife, marsh marigold, rose mallow, daylilies, and perennial candelabra-type primroses. Water plants include water lilies, water hyacinths, water poppies, and water snowflakes, although the latter three are not winter hardy.