Most hellebores can tolerate both sun and shade, but they appreciate shelter from the midday sun. They are relatively hardy and can grow up to Zone 4 with some protection. They grow best in slightly alkaline soils, although they will also tolerate acid soils quite well. Deep soils, rich in organic matter, are best.

Hellebores are easy to grow and do not require much care once established. The area around the plants should be mulched regularly. Plants can be propagated by division. They can also be propagated by seed, but these rarely breed true. Hellebores are relatively free from disease and pest problems, although aphids love hellebores. These pests can be removed by hand or treated using a soap-based spray.  They can also be knocked off by simply spraying water from a hose. Fungal diseases, particularly black spot, can be a problem sometimes. Affected leaves should be removed and discarded. Fortunately, hellebores are relatively deer resistant. More here.

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Courtesy of NYBG Plant Information Service