Hydrangeas require slightly acidic soil, so it's not always easy to find a bed partner for them that doesn't steal the show. Since some hydrangeas need shady areas in the garden and other species like sun, you should pay particular attention to a good common location.
Good bed neighbors for partially shaded locations are: Astilbe (magnificent spars) lily of the valley Star umbels record sheet Scented violets Purple bells Autumn anemone Hostas Ferns rhododendron.