Smooth, nodding flowers of greenish yellow hang one to a cyme above basal, clearly serrated leaves. The green hellebore (Helleborus viridis) is a woodland perennial for part shade, thriving in heavy, rocky, chalky soil kept moist through winter — but every part of it is very poisonous, so site it well away from children.
| Botanical name | Helleborus viridis |
|---|---|
| Common name | Green hellebore |
| Family | Ranunculaceae |
| Type | Perennial herbaceous flower |
| Exposure | Part shade to shade |
| Soil | Heavy, rocky, neutral, chalky, moist |
| Height | 8 to 16 inches (20 to 40 cm) |
| Foliage | Not evergreen |
| Flowering | Late winter to early summer |
| Toxicity | Very poisonous plant |
The green hellebore, Helleborus viridis, is a perennial that is part of the Ranunculaceae family. It owes its name to the acid-green color of its leaves.
This herbaceous plant with deciduous foliage has a particularly slow growth. A single stem forms the plant, bare from the base to the first bracts. Leaves are basal, lanceolate, clearly serrated. Whether they’re whole or lobed, they can reach up to 4 inches across. The deep green leaves are usually set in pairs at the base of each stem. Blooming occurs between February and June, with smooth flowers that droop towards the ground. Each is 1 to 2 inches wide (3 to 5 cm), one per cyme, and their color is greenish yellow.
Be very careful because the entire plant is poisonous. The green hellebore indeed causes intoxication that is even more severe than that of the stinking hellebore, another wild variety. These two species are easily confused since their flowers are so similar.
In the wild, Helleborus viridis is above all else a forest-dwelling plant. It particularly appreciates partly sunny locations, but can’t cope with full sun at all. The green hellebore grows in heavy, rocky soils, both neutral or chalky, typically very moist in winter. This perfectly hardy hellebore can thrive to altitudes nearing 4800 feet (1500m).
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Plant it beneath deciduous trees or shrubs, where bare branches let winter light reach the flowers and summer leaves provide the shade it needs.
Choose the spot carefully: green hellebore has fleshy roots and grows slowly, so it sulks for a long while after being moved.
Wear gloves when planting and handling it, and keep it away from paths used by children.
Spread leaf mould around the clump to keep the roots cool and mimic the forest floor litter it grows in naturally.
Green flowers appear on several hellebores, from the common woodlanders to species you will only meet in a botanical collection. This table sets them side by side, on colour, on what makes each one distinct, and on how likely you are to find it.
| Hellebore | Flower colour | Distinctive feature | How easy to find |
|---|---|---|---|
| Helleborus viridis (green hellebore) | Greenish yellow | Nodding smooth flowers, one per cyme, 8 to 16 inches tall | Wild species, the subject of this page |
| Helleborus argutifolius (Corsican hellebore) | Round yellow and apple-green | Giant species with a tall, wide apical flower scape | Widely grown |
| Helleborus orientalis ‘Green’ | Emerald green | Simple or double flowers, some spotted wine red | Available as named cultivars |
| Helleborus orientalis ‘Anemone Green’ | Aniseed green | Massive flowers with a centre collar the same colour as the rest | Among the rarer ones |
| Helleborus sternii (Stern’s hellebore) | Jade green, in clusters | Hybrid of Corsican hellebore and H. lividus, variegated leaves | Commonly offered as a hybrid |
| Helleborus foetidus (stinking hellebore) | Pale green with a purple rim | Many small bell-shaped flowers, ½ to 1 inch across | Wild variety, early blooming |
| Helleborus multifidus ssp. bocconei | Acid green turning white | Grown for its ornate foliage and elder-berry scented flowers | Very rarely cultivated |
| Helleborus odorus (fragrant hellebore) | Light green | Pleasantly fragrant blooms, unlike the stinking hellebore | Mostly in botanical gardens |
Whichever you settle on, remember that hellebores are poisonous and should be handled with gloves.
The Corsican hellebore is a giant hellebore species: the thick stems easily reach 2 to 3 feet (70 to 80 cm), sometimes even more. When mature, these stems produce a tall, wide apical flower scape that bears round yellow and apple-green flowers. Its massive and contrasting blooming appears between January and March. The colors of each flower, in time, slowly fades to more classical hues.
The green lenten rose produces wonderful emerald-green flowers. Flowers may be simple or double (Helleborus orientalis ‘Double Green’) depending on the cultivar, some are even dotted with wine-colored dots (Helleborus orientalis ‘Double Green Spotted’).
This oriental hellebore is among the rarer ones, not often cultivated. However, it’s a remarkable find when you can get your hands on it: massive aniseed-green flowers that seem to exude freshness. Like all other ‘Anemone’ lenten roses, the blooming is quite distinct, since the center collar is the same color as the rest of the flower.
Stern’s hellebore offers beautiful clusters of jade-green flowers, which it pairs with striking variegated foliage. Each leaf is strongly serrated. This is a hybrid hellebore that is a cross between the Corsican hellebore and Helleborus lividus.
The stinking hellebore is a wild variety with early blooming. Flowering occurs between January and April. Cymes are topped with many small flowers, ½ to 1 inch across (1 to 3 cm), shaped like small bells. They’re pale green with a purple rim.
This botanical hellebore is very rarely cultivated. What is appealing in this one isn’t the flowers, it’s the surprising leafage. The deciduous leaves, ornately serrated and marked, are very ornamental, and they last from spring to fall. The simple flowers release a pleasant elder-berry scent. Star-shaped and vaguely round, they start off acid green and then turn white when mature.
Not many will manage to find this rare hellebore! Also called “fragrant hellebore”, it’s a variety often only found in botanical gardens. It blooms in light green shades and releases a pleasant fragrance, very different from that of the smelling hellebore mentioned above.
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