1.   After he found a plant he liked, he clicked on a feature that suggested companion plants, plants that would work well with the one he was selecting.

2.   Slide talk by Peter Ray of Puget Garden Resources, on companion plants for hellebores.

3.   There is no good companion plant.

4.   To be on the safe side, avoid companion plants with broad leaves, and use ones with airy, smaller and less dense foliage.