Hellebore pruning Determining whether your hellebore is caulescent or acaulesent and how to prune it are frequent topics of confusion. The upright stems of caulescent hellebores have leaves at the bottom and numerous flowers at the end. For instance, caulescent Hellebores include Stinking Hellebores (Helleborus foetidus), Helleborus argutifolius, and Helleborus lividus. After the flowers have stopped flowering, it is preferable to deadhead caulescent hellebores by cutting off the entire stem from the base.
Other hellebores, like Helleborus niger, Helleborus orientalis, and hybrid cultivars, are acaulesent, meaning that they develop their leaves and blooms on distinct stems. The blossoms of acaulescent hellebores won’t be affected by pruning the leaves. The gardener’s preference will determine whether to remove leaves from acaulescent hellebores before they bloom. Before flowering, all of the older leaves should be removed to allow a clear view of the blossoms. Personally, I think it’s best to leave the older leaves on the plant because they not only offer winter interest but help shield the buds on fresh flowers and leaves from unforeseen cold weather. I trim the older leaves that have become a touch ragged during the winter in the early spring.
As I start making plans for the upcoming year, seeing hellebores bloom during the chilly and rainy months definitely helps me shake off the winter blues!
Do my hellebores need to be deadheaded?
As the flower buds begin to appear, late winter or early spring, depending on your growth zone, is a good time to remove the old, dead leaves from the plant.
You run the risk of destroying the lovely blooms if you wait until the plant has fully bloomed.
Older, decomposing leaves can also serve as a breeding ground for bacteria and fungal spores that can harm surrounding plants, including lenten rose bushes.
As soon as you see any sick growth, you should trim it to prevent it from spreading to nearby plants.
Following pruning, fresh leaves will emerge from the core of the plant and spread out as they get bigger.
Hellebore pruning is a simple process, but you’ll need the correct equipment. Use razor-sharp bypass pruners at all times.
Additionally, hellebores have tiny thorns, thus it is advised to use sturdy gardening gloves.
Continue to remove any broken leaves as the growing season goes on to give the plant a neater appearance.
Hellebores are forgiving plants, unlike some plants that are quite particular about when you should prune them. It won’t care if you keep it clean all year round!
Although hellebores are said to bloom in the late winter and early spring, they are evergreen all year round, so I also find myself cutting them in the summer.
Deadheading hellebores flowers
I frequently get the inquiry, “Should I deadhead hellebores? The simple answer is yes, but it will be more enjoyable to learn the lengthy answer.
You’ll be surprised by how long a hellebore plant’s blossoms last. Some of mine have been in bloom for months. But everything nice has an end.
It’s simple to deadhead hellebores. Simply cut off the old flower stems when they begin to wilt. Cut them back to the plant’s root system.
The Bear’s Foot Hellebore (H. foetidus), commonly referred to as “stinking hellebore,” is an exception. You should leave the stems on the plant since they contain the bloom buds for the following season.
By deadheading their blossoms, hellebores can focus their resources on developing new blooms rather than trying to preserve their fading flowers.
Some Hellebore plants produce flower clusters that tower over the rest of the plants. On mature plants, these stems have a tendency to become quite heavy and droopy.
Deadheading hellebores with all of their stems is a good idea when their tips become too straggly.
Do you prune hellebores after they bloom?
Before the flower pods split, I always remove all of the flower stems. Last but not least, it’s common advice to divide your hardy perennials every three years and replant the healthiest pieces in better soil.
When should I trim the hellebores’ leaves?
Early spring or late winter, just as the new growth starts to show, is the perfect time to prune a hellebore plant. This new growth ought to emerge from the earth as little stalks. These stalks ought to still be encircled by a ring of the large leaves from the previous year. The old leaves may very likely have been harmed by the winter’s cold and appear a little worn-down.
These old leaves can be removed as soon as the new growth develops by chopping them off at the base. You don’t need to prune your older foliage as long as it is healthy and undamaged, but once the new growth begins to leaf out, you’ll need to make room for it by pruning the older growth. If you wait too long to remove the old growth, it will tangle up with the new growth and be much more difficult to remove.
Hellebores can be eaten by snails and slugs as well, and the thick foliage provides them with wet, hidden hiding places.
Should hellebores be pruned?
Pruning hellebores is a fairly simple process. The plants are resilient, and the emergence of fresh growth serves as a strong call to action. Take each leaf one at a time, trace the stem back to the ground, and cut it off, leaving about 5cm (2) to prevent rotting. All you need is a pair of sharp secateurs. Slice neatly through the stems to remove the old growth. Be on the lookout for anything that is young and delicate while you’re doing this. Some of these shoots will be new leaves, but the majority of them will be flower buds, so take care not to accidentally cut them off. The main justification for doing the leaves one at a time is for this. Pruning needs to be done carefully, though, as the plant’s sap can hurt skin. Always use gloves, and after each usage, clean your pruning shears completely.
How are hellebores cared for?
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.
Will hellebores grow in number?
A hellebore will produce anywhere between two and ten divided plants. Plant the divided plants as soon as possible, taking care to prevent the roots from drying out. Plant them in well-prepared, well-drained soil.
Why do my hellebores fail to thrive?
Those leaves are not receiving any water. So either the soil is excessively dry or the roots have been lost. If watering doesn’t help, you could dig it up and check what’s going on underneath. If giving it a very good drink (a bucket full) doesn’t help, it should perk up within 48 hours.
I wouldn’t suggest pruning back hellebores. The roots must get energy from the leaves in order to grow the leaves and blossoms for the following year. For one year, you could get away with it, but not continuously.
Why are the leaves on my hellebore becoming black?
The illness that produces stunting, distortion, and black streaking and netting patterns on the leaves is known among hellebore producers as “black death.” It is most likely brought on by the Helleborus net necrosis virus (HeNNV).
When should I feed my hellebore plants?
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
How are hellebores cared for outside?
- Keep hellebores out of reach because they contain chemicals that are dangerous to both people and animals. view more common plants that are poisonous to dogs and cats.
Hellebore care tips:
- Any outdated or damaged foliage can be cut down to the root in the late winter or early spring, just as new growth stalks are arising.
- Your hellebores’ growth will be aided by an annual application of dung or compost.
- When they are actively growing in the spring and fall, give them lots of water. Hellebores become dormant throughout the summer, so you may take it easy.
When may hellebores be divided in the UK?
Each year, cover the soil surrounding plants with a thick layer of mulch and top it off as needed (for more information, see our guide to mulching).
An organic mulch, like homemade compost, is a fantastic way to enrich your soil with nutrients and beneficial microorganisms. Additionally, it conserves moisture and prevents weed germination.
Overwintering
Most of the commonly seen hellebores are resilient and don’t require further protection, notably the Oriental hybrids (Helleborushybridus).
H. niger dislikes sitting in cold, damp soil, therefore it need great drainage over the winter. Therefore, it is preferable to plant it in a container and maintain it in a protected area all winter (such as at the base of a south- or west-facing house wall)
H. thibetanus, a species that dislikes the wintertime rain, or H. lividus, a species that is only moderately hardy, do best when overwintered in a cool greenhouse, porch, or coldframe.
Caring for older plants
Helleborushybridus are often long-lived plants when planted in the right environment. Divide huge, aged clumps in the fall or spring to revitalize them.
Some other hellebores have a lifespan of five years or less. In late April, prune old flowers and leaves to promote fresh growth.
Oriental hybrids
To guarantee that the nodding flowers are fully shown, trim back the old leaves of Helleborus x hybridus in late winter or early spring. Additionally, this aids in reducing Hellebore leaf spot illness
These hellebores frequently self-seed, and the progeny can develop and cover the parent plant. To prevent unwanted seedlings, dig up and relocate seedlings before they grow too big or destroy seed pods before they open by cutting stems at the base.
Other hellebores
Remove the old flower stems and wilted leaves in late April after the flowers have faded to encourage new growth from the roots. If you want plants to self-seed, leave some seedpods.
By division
Most hellebores can be easily propagated by digging up the clumps and splitting them (for more information, see our guide on dividing perennials). Though you may also apply it in spring, immediately following flowering, early autumn is the best time to accomplish this.
Place the smaller clumps you have created so the first roots are 2.5 cm (1 in) below the soil’s surface when you replant them. For the initial growth season, water often until the plant is well-established.
Helleborus argutifolius, H. foetidus, H. lividus, and H. sternii can all be grown from seed but are not recommended for division.