Arlene, that is so pretty. I assume you are saying you want a plant in the water. If so you probably want something low and will flow down. If you cannot find anything send it to me.
These are all hardy
zone 5. That would look pretty. My favorite would be the Chameleon because the leaves are pretty and you would always have color. The forget me nots color probably would look pretty also
Myosotis scorpioides / Blue Water Forget-Me-Not
Hardy water plant resembling the common garden variety. Creeping groundcover with small blue
flowers.
Height: 1'
Caltha palustris / Yellow Marsh Marigold
Single yellow
flowers and deep green leaves with scalloped edges. One of the first plants to bloom in
spring. Best if planted in a cool, shady location.
Height: 1' - 2'
Houttuynia cordata variegata / Chameleon Plant
Heart-shaped leaves with swatches of red, green, and creamy white. Small white
flowers create a stunning accent.
Height: 1' - 1.5'
Lysimachia nummularia 'Aurea' / Golden Creeping Jenny
Carpet of small yellow
flowers and round golden leaves on trailing stems. Helps to soften the transition from land to water along the pond's edge.
Height: 6"