Gardening Episode

A variety of desert rose bush

I don't recall the name of this little bush producing rose-colored flowers. It is a rose, non-thorny variety. Prefers full-sun and I planted it under a tree. It seems too large to move now.

When I clean the pond, foreground not pictured, I sweep part of the water toward this little garden. The "rose" seems to respond with more and larger blossoms. The Nierembergia enjoys the extra water, too, especially the white one behind the purple, as it seems a bit more delicate that its purple robed cousin.

I could add more outlets to the drip system, but then what would I do with the pond water when it needs to be exchanged for clean?