From what I have read, hellebores are supposed to spread. I have a few I planted four years ago, and they seem to be the same as when I planted them. They are planted in a bed of vinca. Should I remove more vinca that surrounds them? I do fertilize them and protect them with a winter mulch. What else should I be doing to have more plants?
Hellebores increase slowly into clumps so have patience, counsels Chris Darbo, wholesale manager of The Natural Garden, St. Charles, and an enthusiastic hellebore grower. “I have Helleborus foetidus, which has finely cut leaves and blooms in January, and H. orientalis, the Lenten rose. Both have increased in twelve years to four times the size of the original plants, but they haven"t self sown. They are planted in a bed of sweet woodruff in a partly shady location.”
“I also have a clump of H. orientalis that was transplanted into my back yard five years ago, and it seeds all over the place. It is planted in shade with no ground cover. My theory is if the seeds can"t reach the ground, they can"t grow!” It takes three years before seedlings bloom.
According to Darbo, hellebores do not need fertilizer. She never rakes leaves from garden beds but instead lets fallen leaves act as a winter mulch. Leaf decomposition over the years has helped her soil to become more loamy.
H. niger, the Christmas rose, does not self seed as readily as H. orientalis and H. foetidus.
Note: A new strain of H.orientalis has recently reached the market. Known as the Royal Heritage strain, it includes colors and patterns never seen before in the species. Fifteen years in the making, Royal Heritage hellebores were developed by John Elsley, Director of Horticulture at Song Sparrow Farm in Avalon, Wisconsin.
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