Answer: It sounds as though you've done a wonderful job with your water feature. Here are two suggestions for addition to your pond area:
Oenothera hookeri (Evening Primrose) This plant is a perennial that grows flat on the ground sending up a 3' spike of 3-4" yellow flowers that open in the evening and morning. Use in the background. It is a heavy seeder, hard to fail. The sphinx moth hangs around the flower at dusk and after dark. It will survive drought and flooding, sun, wind and cold. It will fail only when crowded out by other taller plants. I like the plant as it is tough, stable in new environments, and after it has pioneered the new spot it is gradually replaced with the dominant species of the area.
Calycanthus occidentalis (Spice Bush) Deciduous shrub, 8 ft., flowers fragrant, reddish-brown in April-Aug. Likes sun to partial shade and moist soil. It is tolerant to sandy or clay soils, likes water. In the interior it will get leaf burn if it goes dry, but looks good if given regular water. If planted in shade and given regular water Spice Bush can be trained into Spice Vine.
Best wishes with your landscape!
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