Hellebores are low-maintenance perennials prized for their abundance of winter and early spring blooms that keep gardens in bloom all year long in Sonoma County’s Mediterranean environment. At this time of year, when many other plants in the garden are just starting to sprout or are still dormant, their frost-hardiness is very beneficial.
All Helleborus species originated in Eurasia and were initially cultivated for their therapeutic qualities. They are resistant to deer because of the toxic alkaloids they carry, but they could also irritate a gardener’s skin. Rhizomatous plants grow in clumps that resemble shrubs. Some leaves have leaves with clearly serrated margins, while others have lobed, frequently deeply, or totally divided, into leaflets. Deep green to light grayish-green are the different shades of foliage.
Hellebores are grown for their bell-shaped flowers, some of which are upward facing, some of which are downward facing, some of which are flat, and some of which are considerably more cup-shaped, as well as for their foliage, which looks to be evergreen even if individual stems die back each year. The palette includes shades of purple, pink, white, and even yellow.
Plant hellebores in rich, well-draining soil that has been improved with compost if the soil is poor and in partial or dappled shade. Although not completely tolerant of dryness, they do not require continual rainfall and can tolerate dry spells in the summer provided they are situated in adequate shade. Defend them against chilly, strong winds and mulch the soil every year with compost.
Although they are always appreciated, luscious, lovely leaves are not as prized as the blooms that bloom from December to March. Make careful to place hellebores where people can enjoy the flowers, such as next to a walkway or driveway or somewhere that people can view them from inside.
Argutifolious Helleborus (syn. H. corsicus). Late winter and early spring bring out clusters of pale green flowers on Corsican hellebore’s dark green leaves with serrated margins. The plants are as wide and 21/2 to 3 feet tall. Plants self-seed, but not aggressively, and are simple to pull out; growth is lush and vigorous.
Hybrid helleborus. Hybrids of the infrequently cultivated H. orientalis crossed with other species can be found in this group of hellebores. They typically reach heights and widths of around 18 inches, and they bloom between midwinter and midspring. Flowers come in pink, purple, and yellow hues.
Helleborus folidus This species, derogatorily known as stinking hellebore, differs greatly from the others in appearance. The many linear leaflets that make up the deep green leaves give them a highly lacy, beautiful appearance. When leaves are crushed, they certainly have a foul scent, although it’s not always apparent. Pale green flowers that stand above the leaf clusters and remain for several weeks are produced in prodigious amounts by this species. Although it can sprawl and flop a little, the mature size is roughly 2 ft. x 18 in.
sternii helleborus This hybrid of H. argutifolia and H. lividus is somewhat smaller but still possesses the robust traits of H. argutifolius, including pinkish-purple leaf stalks and major veins. Its pale green blossoms have hues of pinkish-purple as well.
There are numerous other species, and they are all characterized by winter flowering. Once established, they require simply the trimming of their spent flower and leaf stalks after bloom and a top-dressing of compost in the fall. A few quick squirts of water from the hose will knock any aphids off, and they won’t return.
Are hellebores thirsty plants?
- Hellebores are at their best in evenly wet well-drained soil in partial shade.
- Long dry spells should be adequately hydrated; once established, they are drought-tolerant.
- Hellebores thrive in soil that has been greatly improved by organic matter.
- The hybrids known as Helleborus x hybridus (formerly termed Helleborus orientalis) prefer a soil pH close to neutral and even alkaline; add lime if your soil is too acid.
- The Christmas Rose (H. niger) may take some time to establish itself; to speed things along, consider adding some magnesium to the environment in the form of Epsom salts or dolomitic limestone.
- Plants will benefit from a little application of granular, balanced fertilizer in early spring.
Do hellebores tolerate direct sunlight?
I adore a four-season garden, so I find it very pleasant to have blossoms that start in late winter and early April. At this point, hellebores command attention. They resurface with the first warming sunrays, even after being flattened by the bitter frost and snow of winter. You simply got to love a plant that braves what nature throws at it and can still shine out at this time of year. And the flowers stay a long timefrom March to May in my Pennsylvania garden. The fact that they are excellent shade plants and essentially evergreen just to their appeal. The most popular and, for that matter, easiest to grow are the Oriental hybrid hellebores (Helleborushybridus cvs., USDA Hardiness Zones 69). (Helleborushybridus cvs., USDA Hardiness Zones 69). Since they bloom around the start of Lent, they are known as Lenten roses. And as long-blooming, low-maintenance, practically evergreen perennials that survive even dry shade and can flower before the snow melts, these plants have few counterparts in the garden.
With the dizzying amount of alternatives available, it’s easy to pick something you enjoy. In spite of this, certain hellebores are superior than others, and by arming yourself with some information, you may be certain to leave your neighborhood garden center with the best of the bunch.
To get what you want, buy it in bloom
Hellebores are available in almost any shade you can imagine, including white, green, pink, apricot, and purple, to mention a few. Breeders have yet to produce a pure blue or true red that is deserving, but we are working on it. Every year, it seems that my preferences for hellebores’ hues shift. I seem to favor yellows and blacks right now (which are really a shade of deep purple).
However, one is not constrained to this gamut of solid colors. Hellebores can also have lovely veining or picotee edges, which are ones that are a distinct color than the body of the flower. They may feature spots or a dark core on the inside that draws the viewer’s attention to the blossom.
The variety of choices includes the floral shapes as well. Hellebores can also have anemone-shaped blooms, which resemble something in between a single and a double, in addition to single, double, and star-shaped flowers.
Buying a hellebore when it is in bloom is the best method to make sure you get what you want. Look for flowers with colors that aren’t muddled by too much green, unless the green is intentional. If the flower has veins, spots, or a picotee shape, all of the petals should have the same markings (which are actually sepals).
Oriental Hybrid Hellebores
They like partial shade but may survive in both practically full sun and almost full shade. Flower output may be hampered by dense shading.
They typically like slightly acidic to neutral soils. Avoid planting them in an area that is too damp because this promotes decay.
The earth should only partially encase the crown. Hellebores produce less flowers when planted too deeply, just like peonies.
They appreciate an annual application of well-rotted manure or compost to promote healthy development, although they’ll overlook it for a year or two. Remove the previous year’s foliage in late January or early February, before the buds open, to enhance the view of their blossoms. Old leaves won’t disintegrate in less than a year, so don’t toss them in the compost pile.
They self-sow quickly. It can be a good idea to discourage this behavior in order to maintain the garden neat and to stop seeds from sprouting in the crowns of other plants. Don’t count on seedlings to closely resemble their parents. Although it is not required, division is the greatest way to produce an exact replica of a specific plant. Simply use your hands to pry apart the crown in the early spring or late summer. Make sure the plants receive enough water.
Hellebores with a short stem at the base of the flower, called a pedicel, that turns the blossom outward rather than downward are my favorite. I don’t mind whether the blossom hangs. I like turning up their faces and, if you like, “playing” with the plants.
You will need to conduct some thorough research if the hellebore you wish to purchase is not in bloom. Unless the parent was specially bred to generate such offspring, hellebore seedlings are unlikely to resemble the plant they came from. Better garden centers should be able to respond to inquiries regarding the parentage of the plant and if it is likely to be true to type.
Since there aren’t many called hellebores in existence and with a keen eye, you can find an unidentified plant that is equivalent to the one you’re looking for, I typically don’t advise hunting for them. A hellebore is frequently identified as being a member of a certain strain or line (such as the Royal Heritage Strain or Pine Knot Strain) that was bred for a particular characteristic, such as color saturation, color variation, or bloom shape. Asking about the qualities your prospective purchase was bred for is a smart idea.
Hellebores, in my opinion, are nature’s wintertime gift. They usher in spring before the daffodils and are the ideal remedy for long winters and cabin sickness.
What location is ideal for planting hellebores?
Depending on the variety, plant hellebores in full or partial shade at the front of a border. They can be grown in pots in a compost with a loam basis, but they thrive in rich, well-drained soil.
When to plant hellebores
As long as the soil is not frozen, hellebores can be planted at any time of the year. The majority of hellebores are listed for sale from late winter to early spring when they are in bloom, but you might locate one in a garden center’s clearance section in the summer that you can plant with no issues. Keep in mind that hellebores detest being moved after being planted, so avoid doing so.
How to plant hellebores
Hellebores should be planted in the same way as other perennials, with a spadeful of garden compost and a sprinkle of mycorrhizal fungi to aid in the plant’s establishment. Water thoroughly and gently press in.
Watch Monty Don’s instructional video on planting and growing hellebores to learn about planting depth, soil preparation, and how to prevent leaf spot disease. Additionally, Monty discusses how to select the best flowers for immediate effect and displays the variety of his collection of hellebores:
How to care for hellebores
When blossoms and new foliage appear, trim back the thick, leathery leaves, and mulch the plants every year with well-rotted compost or manure. Once established, hellebores struggle to be moved, therefore try to avoid doing so.
How to propagate hellebores
Avoid dividing hellebores since they struggle to be transported. In order to develop new plants for nothing, gather ripe seed and sow it into modules. Alternately, allow the hellebores in your garden to self-seed. By letting them self-seed at random, you’ll produce a hodge-podge of various colors and flower shapes; you might even develop your own new hybrid! No hellebore seedling will be true to its parents.
Growing hellebores: problem-solving
Leaf spot, a fungus infection that causes unattractive brown and black patches on the leaves, is the major foe of hellebores. When you see damaged foliage, remove it.
Here, Monty Don shows how to recognize hellebore leaf spot and describes how to prevent it from spreading to other plants:
Advice on buying hellebores
- Garden centers sell hellebores, but you can get a broader selection at specialized nurseries and online
- Avoid double-flowered hellebores if you are growing for bees because single-flowered plants are the best for pollinators.
What environments do hellebores prefer?
John Massey, the owner of the nursery, offers his suggestions and guidance on how to cultivate hellebores in your garden.
As long as a few straightforward rules are followed, hellebores are simple plants to grow. Although they are “snow-melt” plants, and if you can grow them on a slope, they will automatically be well drained, they love a rich soil with plenty of available moisture during their flowering time, but they also demand excellent drainage. In their natural environment, the majority are found on slightly alkaline soils, although as long as there are adequate of nutrients, it doesn’t really matter if the soil is neutral or slightly acidic. Steer clear of peaty soils, poor dry soils, and wet areas.
It’s crucial to provide them with a protected location away from chilly winds. Hellebores will endure dryer summer weather as long as there is some shade, but keep in mind that year-round overshading can diminish the amount of flowers. The best place for them to thrive is among deciduous shrubs and trees, which will offer them with plenty of light in the winter and spring and some welcome shade in the summer.
I like to combine middle-storey shrubs like Cornus officinalis and Ribes ‘White Icicle’ with Helleborus x hybridus Ashwood Garden Hybrids; these shrubs can be pruned as needed to raise the canopy. Decadent trees’ top stories provide even greater defense from wind and intense sunshine. To lengthen the growing season, I also prefer to plant some non-seeding herbaceous geraniums with July blooms between the hellebores; cultivars like “Rozanne” and “Anne Folkard” work best.
The most crucial step in soil preparation is before planting. Because hellebores have deep roots, amend your soil well and add a lot of humus, such as leaf mould, spent mushroom compost, or well-rotted manure. Keep in mind to water your newly planted hellebores frequently for the first year.
Early in the spring and again in August or September, when the new flower buds are beginning to form, I feed my plants. I frequently use leftover mushroom compost, which has some lime, because it frequently releases nutrients. Be careful not to mulch into the plant’s crown as this could lead to the decay of the buds. I also deal with fish, blood, and bone, and seaweed fertilizer is a wonderful substitute.
In late December, I prefer to remove all the old leaves off semi-deciduous plants (Garden Hybrids or Lenten Roses only). By preventing the growing buds from hiding under the old leaves, this will make the flowers much easier to notice and safeguard them from rodent attacks. If you don’t need the seed after flowering, cut off the old, faded flower stems to promote the growth of new growth the following year. A systemic fungicide should be applied to them on occasion, and you should watch out for aphids in particular because they might spread viruses.
The Ashwood team has provided further cultural insights on raising hellebores.read more