We need more info. What zone are you in and what part of the country.

I also suggest you smooth out that tight curve, dip, into part of the main curve of the bed.

And what are you looking for? Flowering plants? Groundcover?

Also, shade and moisture shouldn't be inhibiting flowering in Hydrangeas. Do you know what kind they are? Have they been pruned?

7B, North Carolina Central.
Yes, I did trim these back last spring. They are from the old wood and our pinnacle and mop head. Perhaps I watered these too much. Suggestions how to bring them back to life?

Here is a suggested photo of what I’m thinking about. But truly want something natural.

Shade and moist soils are ideal for mophead hydrangeas......not so much for panicles. They prefer sunnier and typically drier situations. Just restrict the pruning of mopheads to deadheading the old flowers, as pruning can eliminate flowering. You may also need some protection from extreme winter cold or late spring frosts, as cold temps can also inhibit flowering.

Japanese snowbell trees are lovely but will get much larger than the one in your photo.

Thank you so much!