It is extra-ordinarily difficult to capture in a photo the charm of Water Plantain (Alisma trivale). The small, white, three-petalled flowers are widely spaced on a tall but insubstantial inflorescence, which, in a photo, is mostly just not there. In life, however, the transparent scrim of little stalks and buds and flowers, held high above the water, has delicate appeal. The leaves are relatively small on long petioles, glossy and pointed, and arranged in a rosette at the base of the stalk.
Water Plantain delights in mucky soil and shallow standing water. Unlike some other desirable wetland natives, Water Plantain actually likes stagnant water, so it is a good choice for hard-to-plant, out-of-the-way corners of constructed ponds. It also tolerates a bit of drying out by late summer, so it also thrives in natural wetlands and pond edges.
Water Plantain requires full sun, or nearly full sun, to promote flowering.