How to Grow and Care for Bells of Ireland

  • jack Officer
  • May 27, 2023

Molucella laevis

For a funky-looking annual that’s simply uncommon sufficient to be completely superior, how about giving some bells of Eire a hoop?

A close up vertical image of the inflorescence of bells of Ireland (Molucella laevis) growing in the garden pictured on a soft focus background. To the center and bottom of the frame is green and white printed text.

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As a former plant sciences main, I’ve taken my fair proportion of plant identification quizzes.

Some species are powerful to determine, particularly if their relations are included within the evaluation. Others, comparable to bells of Eire, are distinctive sufficient to ID straight away, no brain-racking required.

They appear so distinctive, in spite of everything.

With upright stalks that bear clusters of small white flowers surrounded by gentle inexperienced calyces, it’s near-impossible to mistake Moluccella laevis for anything.

Whether or not in a backyard or floral association, this magnificence actually stands out in a crowd.

Given their one-of-a-kind aesthetic, it’s solely pure to need some bells of Eire on your personal assortment.

And after giving this information a read-through and giving our ideas a strive, chances are you’ll uncover that you simply’re a pure at rising them.

Right here’s what we’ll cowl:

What Are Bells of Eire Flowers?

It’s a legitimate query. I imply, they actually don’t appear to be the stereotypical, stock-image blooms you would possibly discover after doing a Google picture seek for “flower.”

Aka Irish bells, shellflowers, and Molucca balms, bells of Eire flowers are half-hardy annuals from the mint household suited to USDA Hardiness Zones 2 to 11.

A close up vertical image of a bells of Ireland (Molucella laevis) flower pictured on a dark background.

This implies M. laevis can deal with the cool air and soil temperatures of early spring that tender annuals can’t, however lacks the resistance to gentle springtime frosts and freezes that hardy annuals have.

This upright-growing plant reaches a mature top of 1 and a half to 3 ft, and a mature unfold of 1 to at least one and a half ft.

It produces tall, showy spikes of tiny, white, aromatic flowers that bloom from midsummer to fall, that are encased in massive, conspicuous, bell-shaped inexperienced calyces.

The perfume of the blooms is uniquely distinctive, with a minty, candy freshness that’s harking back to apple, or maybe lime inexperienced Skittles.

These calyces kind in tightly-packed clusters alongside the square-shaped stems, with a hoop of small, sharp thorns beneath every cluster. Oppositely organized, scalloped leaves protrude from between the calyx clusters on lengthy petioles.

Because the plant desiccates on the finish of the season, its inexperienced hue turns to engaging shades of white or pale beige. And beneath the plant’s crown lies an extended and delicate taproot, which may make transplanting a little bit of a problem.

Regardless of their widespread title, bells of Eire don’t really hail from the Emerald Isle, however moderately, from areas of western Asia together with Turkey, Syria, Iraq, and the Caucasus.

It’s most likely secure to say that the Irish a part of their widespread moniker was a marketable reference to the plant’s inexperienced hue, a coloration usually related to Eire.

A close up horizontal image of Molucella laevis (bells of Ireland) flowers pictured on a soft focus background.

The origin of the Latin title, nonetheless, is a little more clear-cut. Bestowed by Carl Linnaeus, the genus title Moluccella is known as after Indonesia’s Molucca Islands, the place bells of Eire have been initially regarded as from.

The species title laevis means clean – an correct descriptor of the plant’s floor.

First cultivated within the 1570s in Belgium, bells of Eire have been lovingly grown by horticulturalists ever since.

Moreover their decorative magnificence within the backyard, M. laevis is utilized in fragrance making, and is a verdant favourite in floral preparations, each freshly reduce and dried.

Within the language of flowers, i.e. floriography, bells of Eire symbolize good luck, making them the right present for these embarking on new beginnings.


As anybody eating at a sushi restaurant is aware of, it may be powerful to make a satisfying determination when you will have a smorgasbord of choices in entrance of you.

Fortunately, you simply have two viable avenues for propagating bells of Eire: from seed or through transplanting.

From Seed

If that is your first try at rising bells of Eire, you’ll want to amass seeds from an exterior supply, comparable to a vendor or a pal.

A close up horizontal image of a clump of Molucella laevis (bells of Ireland) growing in the garden.

When you’ve got M. laevis already rising in your backyard, you’ll be able to merely collect seeds out of your present specimens as soon as they’ve dried.

To take action, wait till the “bells” attain a crinkly texture and a pale beige or white hue earlier than plucking the calyces from the stem. Put on gloves and be conscious of the thorns.

For hand safety, try these puncture-resistant gardening gloves from Garrett Wade, out there in inexperienced, orange, and blue.

A close up of a hand wearing a green puncture-resistant gardening glove while doing the pruning.

Puncture-Resistant Gardening Gloves – Inexperienced

Once you look right into a plucked calyx, you’ll discover the seeds on the backside.

Flip the calyx the other way up, take the underside between your fingers, and roll it between your fingers over an open cup. Repeat with every plucked calyx till you’ve harvested your whole seeds.

The seeds themselves are small, darkish, and roughly pyramid-shaped, virtually like four-sided cube.

Go away them out to dry for every week or so, place them in a labeled envelope, after which retailer them within the fridge. You now have sowable seeds!

A close up horizontal image of Molucella laevis seedlings in small plastic seed starting pots.

About 10 to 12 weeks earlier than the native final frost date, fill three-inch containers with a 50:50 combination of peat moss and perlite, and sow the seeds just under the media’s floor.

Flippantly water the media, seal the tray in plastic, and go away it within the fridge for 2 weeks, retaining the media moist all of the whereas.

After two weeks, unseal the containers and convey them out right into a well-lit indoor space. Preserve the media moist, and provides the containers a quarter-turn every day to stop lopsided progress.

As soon as nighttime temperatures are persistently above 40°F and daytime temperatures are persistently between 50 and 60°F, your bells of Eire seedlings are able to harden off for transplanting open air.

A close up horizontal image of the view inside a Molucella laevis flower pictured on a dark background.

Take your containers open air into direct daylight, and go away them there for 30 to 60 minutes earlier than bringing them again indoors.

Add a further 30 to 60 minutes every successive day till the crops can spend a full day open air.

Now it’s transplanting time!

Through Transplanting

Previous to transplanting, put together well-draining and fertile planting websites, and remember to house them 10 to 12 inches aside. Dig holes which might be simply as deep and a bit wider than every transplant’s container.

Whether or not you’re working with a transplant that you simply’ve bought, one you’ve grown your self, or one that you simply’ve lifted from elsewhere in your backyard, it’s important to be mild with the foundation system.

A close up horizontal image of bells of Ireland growing in the garden in light filtered sunshine.

Whereas retaining a hand on high of the container close to the plant’s crown, flip the container over and gently ease the transplant out.

With the transplant and media faraway from the container, gently place them into the outlet.

Backfill the outlet with adjoining soil, water it in, and maintain the encompassing soil moist. Repeat for every transplant, and also you’re good to go!

Learn how to Develop

All in all, rising and caring for bells of Eire is fairly easy.

Local weather and Publicity Wants

As half-hardy annuals, bells of Eire gained’t survive the winter. You’re free to make the most of these unhealthy boys in USDA Hardiness Zones 2 via 11, however they gained’t be at their finest in excessive warmth or humidity.

M. laevis prefers full solar, however it could actually tolerate partial solar and partial shade publicity. In windy websites, you might have to stake your specimens to maintain them upright.

Bamboo Stakes

For some assist, how about these two-foot bamboo stakes? They’re offered in packs of 25 on Amazon.

Soil Wants

The best soil for M. laevis is well-draining and fertile, though this species can really tolerate lean soils.

A close up horizontal image of green Molucella laevis (bells of Ireland) growing in light filtered sunshine pictured on a soft focus background.

Working an inch or two of natural matter into your backyard beds in early spring is a surefire method to supply that candy, candy fertility.

A pH that’s about impartial is perfect, so shoot for a variety of 6.5 to 7.5.

Water and Fertilizer Wants

These flowers love to take a seat in moist soils, so remember to give your bells of Eire a pleasant drink at any time when the floor feels dry to the contact.

A horizontal image of bells of Ireland flowers growing in the garden.

Both that, or select a naturally moist but well-draining planting web site that doesn’t want supplemental irrigation.

EZ-Gro Liquid Fertilizer

Every month throughout the rising season, apply a general-purpose, balanced fertilizer comparable to this all-purpose, 20-20-20 NPK liquid plant meals from EZ-gro, offered in one-quart containers on Amazon.

Rising Ideas

  • Full solar publicity is preferable, however partial solar and partial shade are tolerable.
  • Intention for a pH of 6.5-7.5.
  • Remember to preserve soil moisture.


Except for the watering and feeding that you simply’ll be doing all through the season, there are just a few different duties you must add to your M. laevis routine.

A close up vertical image of a flower stalk of Molucella laevis growing in the garden pictured on a soft focus background.

These guys are able to self-seeding, so you’ll be able to both pull or transplant any lil’ bells of Eire that pop up in subsequent seasons, if you want.

Alternatively, you’ll be able to reduce the stems earlier than seeds kind in late summer time to early fall once they start to dry should you don’t need the seeds to scatter naturally.

If you happen to time this excellent – i.e. because the calyces lose their flexibility and change into agency – it’s also possible to use the dried blooms in floral preparations.

Cultivars to Choose

Don’t get it twisted, people. A daily M. laevis – out there in seed kind through Eden Brothers – is just about excellent.

A close up square image of bells of Ireland flowers growing in the garden.

Bells of Eire Seeds

Nevertheless, there’s one cultivar that has lots to supply, and it’s one I’d be remiss in ignoring.

Pixie Bells

There’s a difficulty that may plague the usual bells of Eire: lankiness.

It’s a skinny-stemmed plant, but it could actually develop as much as three ft tall. This will go away your unstaked bells of Eire buffeted round by winds, or susceptible to drooping because the shoots gather moisture buildup from rainfall.

‘Pixie Bells’ solves the issue with the diminished top and elevated stem stockiness {that a} plain ol’ M. laevis lacks.

As an alternative of a most top of three ft, this selection’s verticality solely reaches 20 to 24 inches.

And with its stronger stems, ‘Pixie Bells’ can stand up to better quantities of wind and water earlier than flopping over, in the event that they even flop in any respect.

If I could converse when it comes to Nintendo’s “Tremendous Mario Bros.” franchise, this cultivar is the Mario to the usual species’ Luigi – shorter and stouter, and extra able to beating Bowser.

A close up of Molucella laevis 'Pixie Bells' growing in a small pot.

‘Pixie Bells’

Okay, possibly not that final half. However ‘Pixie Bells’ is certainly a winner!

Packs of 30 ‘Pixie Bells’ seeds are out there for buy from Burpee.

Managing Pests and Illness

Fortunately, M. laevis doesn’t go away gardeners with a lot to fret about within the illnesses division. It’s immune to deer and rabbits, and plenty of pests and illnesses don’t pose a risk.

However to maintain your bells of Eire wanting fantastic, one should know of some potential points that might come up.


The wonderful thing about correct pest administration? It additionally doubles as illness prevention, since bugs can usually vector disease-causing pathogens as they feed.


Measuring 1/16 to an eighth of an inch lengthy, aphids are soft-bodied, translucent, and pear-shaped, with a light-weight inexperienced hue that could be powerful to make out on a light-weight inexperienced plant.

A close up horizontal image of a flower stalk of Molucella laevis (bells of Ireland) pictured in light sunshine pictured on a soft focus background.

Aphids will settle onto the shoots of crops and extract scrumptious fluids from the phloem with their piercing-sucking mouthparts. Infested buildings might exhibit chlorosis and stunted progress, particularly if the aphid infestation is heavy.

Spider Mites

With oval-shaped our bodies coated in translucent bristles, these puny arachnids are powerful to identify with the bare eye.

However you’ll most likely discover the webs they weave on infested crops, which generally is a little bit of an eyesore.

As evidenced by tiny white punctures, spider mites suck out very important plant juices, leading to localized chlorosis and desiccation.

For management of spider mites, forceful water sprays or direct sprays of insecticidal cleaning soap are your finest wager.

A close up of a spray bottle of Bonide Insecticidal Soap isolated on a white background.

Bonide Insecticidal Cleaning soap

For the latter, a quart of multipurpose insecticidal cleaning soap is accessible to buy from Bonide through Arbico Organics.


As a basic preventative measure for heading off illnesses, strive your finest to backyard in a sanitary method.

This implies utilizing sanitized instruments, disease-free soils, and pathogen-free M. laevis specimens.

Cercospora Leaf Spot

Brought on by species of Cercospora fungi, this illness riddles the leaves of contaminated specimens with small, brown, spherical to angular spots. Not merely beauty, these spots intrude with photosynthesis.

To forestall this downside, collect and get rid of adjoining backyard detritus the place the fungus can overwinter, and remember to keep away from overhead irrigation, which may promote the moist circumstances that the causal fungi love.

Once you “spot” signs in gentle circumstances of an infection, take away contaminated leaves and pitch them – don’t compost them.

A severely contaminated specimen must be lifted and disposed of. Because the causal fungi can persist within the soil for as much as two years, keep away from planting in contaminated websites for at the least two years after an infection.

Crown Rot

With a reputation like “crown rot,” this illness is considerably self-explanatory.

On the soil line, the plant’s crown does its job of holding the stem upright whereas transferring water and vitamins between the roots and the shoots.

However in oversaturated soil circumstances, the crown is susceptible to assault from varied pathogens comparable to Fusarium, Phytophthora, and Rhizoctonia species.

If an infection happens, the crown can rot out, resulting in stunted progress, root necrosis, and eventual plant demise.

Prevention is the very best treatment for crown rot: be sure that soil oversaturation doesn’t happen.

This implies watering much less usually, offering higher drainage, or each. Elevate and destroy any specimens the place the vast majority of the crown and root system are rotted out.

Greatest Makes use of

Identical to potatoes do, bells of Eire hit the spot in quite a lot of circumstances.

A horizontal image of the flowers and foliage of Molucella laevis, pictured in bright sunshine on a soft focus background.

Within the backyard, they work amazingly in blended borders with different annuals.

Their uncommon aesthetic matches properly inside the lovely chaos of a cottage backyard, and their upright kind supplies many alternatives for complementary plantings inside containers.

Extra of a florist than a landscaper? Whether or not gathered contemporary or allowed to dry, M. laevis is a knockout in floral preparations.

When bestowed both with or with out different flowers, bells of Eire are a ravishing strategy to want any person good luck!

After reducing the dry stems, take away the thorns and leaves earlier than hanging them as much as end drying in a well-ventilated space.

A vertical image of a long flower stalk of bells of Ireland (Molucella laevis) pictured in bright sunshine pictured on a soft focus background.

If you would like some contemporary bells of Eire for residing preparations, you must reduce them when the calyces are about half open.

Make every reduce diagonally, in order that the stem can take up water whereas touching the underside of a vase or different container. Take away the thorns and leaves, and voila! They’re able to go.

Whatever the particular software, bells of Eire praise purple hues fairly nicely. Be at liberty to pair them with decorative alliums, butterfly bushes, and even purple-leaved coleus!

Fast Reference Rising Information

Plant Sort: Half-hardy annual flower Flower/Foliage Shade: White blooms in gentle inexperienced calyces/gentle inexperienced
Native to: Iraq, Turkey, Syria, the Caucasus Water Wants: Reasonable
Hardiness (USDA Zones): 2-11 Upkeep: Low
Bloom Time: July-September Tolerance: Partial shade, poor soils
Publicity: Full solar Soil Sort: Moist, fertile
Time to Maturity: 2-3 months Soil pH: 6.5-7.5
Spacing: 10-12 inches Soil Drainage: Properly-draining
Planting Depth: 1/4 inch (seed), depth of root system (transplants) Attracts: Bees, butterflies
Top: 1.5-3 ft Makes use of: Containers, cottage gardens, reduce flowers, dried flowers, blended borders
Unfold: 1-1.5 ft Household: Lamiaceae
Development Fee: Fast Genus: Molucella
Frequent Pests and Ailments: Aphids, mealybugs, slugs, spider mites; root rot Species: Laevis

Give This Inexperienced Plant the Inexperienced Gentle

With so many potential plantings vying on your consideration, it’s comprehensible that you simply would possibly strategy a brand new one with warning. Why do you have to select this one over the others?

A close up horizontal image of the inflorescence of a bells of Ireland (Molucella laevis) plant growing in the garden pictured on a soft focus background.

If you happen to didn’t earlier than you learn this information, you most likely perceive by now what makes bells of Eire so particular. It’s inconceivable to disclaim the particular, distinctive fantastic thing about Molucella laevis.

Bursting with questions or remarks? Then head on all the way down to the feedback part!

Inquisitive about different members of the Lamiaceae household? Listed below are some minty guides on your perusing pleasure:

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