Calendula (Calendula officinalis)

The Golden Flower That Has Comforted Generations
Part of the Holistic Healthcare Wexford Herbal Medicine Library

By Dr Catherine W. Dunne MSc.D., RGN (GPN), M.H.I.T.

Few medicinal plants brighten both the garden and the apothecary quite like Calendula (Calendula officinalis).

With its brilliant golden-yellow and deep orange flowers, Calendula has delighted gardeners, herbalists and physicians for centuries. More than simply an ornamental plant, it has earned a respected place in traditional herbal medicine, where it has been valued for supporting the skin, soothing minor irritations and promoting the body’s natural healing processes.

Unlike some medicinal herbs that hide quietly amongst hedgerows and woodland paths, Calendula seems to celebrate being noticed.

Its cheerful flowers open with the morning sun and often close again towards evening, almost as though the plant itself follows the rhythm of the day.

Perhaps that is one reason generations have associated Calendula with warmth, comfort and restoration.

Today it remains one of the most widely cultivated medicinal flowers in the world, equally at home in cottage gardens, monastery gardens and modern herbal practices.

Its beauty captures the eye.
Its history captures the imagination.

A Flower Through History

The story of Calendula stretches back many centuries.

Native to southern Europe but now cultivated throughout much of the world, the plant became highly valued by ancient civilisations for both its beauty and its practical usefulness. The Romans admired its vibrant flowers, while medieval herbalists included Calendula amongst the essential plants grown in monastery physic gardens.

Its common name is believed to derive from the Latin word calendae, meaning “the first day of the month.”

Unlike many flowers that bloom for only a short season, Calendula often flowers repeatedly throughout the warmer months, giving the impression that it blooms with every passing month of the year.

This remarkable willingness to keep flowering made it a symbol of constancy, hope and renewal.

For herbalists, however, its greatest value lay not in symbolism but in its versatility.

The bright petals found their way into oils, ointments, creams, washes, teas and tinctures, becoming one of the most frequently used medicinal flowers in traditional European herbal medicine.

Meeting Calendula

Calendula is a member of the Asteraceae, or daisy family, although its flowers possess a richness and fullness that often distinguish it from its wild relatives.

Depending on the variety, the blooms range from soft buttery yellow to vibrant orange and even deep apricot shades. Some varieties produce simple daisy-like flowers, while others develop densely layered double blooms that resemble miniature chrysanthemums.

Its bright green leaves are soft to the touch and slightly aromatic when gently crushed.

Throughout the growing season, Calendula rewards even modest care with an abundance of flowers, often continuing to bloom from late spring until the first frosts of autumn.

There is only one small secret.
The more flowers you harvest…

…the more flowers the plant seems determined to produce.
For generations, gardeners have smiled at this simple truth.
Calendula is never happier than when it is being picked.

Harvesting Sunshine

If there is one herb that teaches patience and generosity, it is Calendula.

Unlike many medicinal plants that offer only a brief harvesting season, Calendula seems almost eager to keep giving. The more flowers that are carefully picked, the more new blossoms appear, rewarding the gardener with an almost continuous display throughout the summer.

There is a quiet rhythm to harvesting Calendula.

Early in the morning, once the dew has lifted and the flowers have fully opened to the sun, each bloom is gently picked by hand. Some herbalists prefer to dry the entire flower head, while others carefully separate the petals before drying.

Both methods have their place.

The important thing is to preserve the flowers gently, allowing the warmth of summer to remain within them.

Spread thinly in a warm, well-ventilated place away from direct sunlight, the flowers slowly lose their moisture while retaining much of their remarkable colour.

Months later, opening a jar of dried Calendula petals is rather like opening a little piece of summer.

The brilliant oranges and golden yellows remain almost unchanged, carrying with them memories of warm gardens, buzzing bees and long sunny afternoons.

For many herbalists, that simple moment is one of the great pleasures of working with medicinal plants.

A Flower for the Skin

Perhaps no medicinal flower has earned a stronger reputation for supporting healthy skin than Calendula.

For generations it has been infused into oils, incorporated into creams, ointments, salves and balms, and applied wherever gentle support for the skin has traditionally been desired.

Its popularity is easy to understand.

Calendula is one of those rare herbs that seems equally at home in the family medicine cupboard as it is in the professional herbal dispensary.

Traditional herbalists have long appreciated its role in caring for dry, delicate or irritated skin. Infused oils prepared from the flower heads remain one of the most widely used preparations, often forming the foundation of many herbal skin products.

Today, Calendula continues to feature in countless natural skincare formulations throughout the world.

Its enduring popularity speaks for itself.

More Than a Skin Herb

Although Calendula is often thought of as a herb for the skin, its traditional uses extend far beyond external applications.

Historically, Calendula was also prepared as herbal infusions and tinctures, where it was valued for supporting the body’s natural healing processes and overall wellbeing.

Modern research has identified a rich collection of naturally occurring constituents within the flowers, including flavonoids, triterpenoids, carotenoids and essential oils. These compounds continue to attract scientific interest as researchers seek to understand the plant’s remarkable biological activity.

As with many medicinal herbs, however, centuries of traditional experience still exceed the amount of modern clinical research currently available.

This should not be viewed as a weakness.

Rather, it reflects the fact that many traditional medicinal plants are only now beginning to receive the scientific attention they deserve.

Growing Calendula

Few medicinal plants are as rewarding to grow.
Calendula asks for very little in return.

A sunny position, reasonably fertile soil and occasional watering during prolonged dry spells are usually all that is required.

Once established, the plants flower generously over many months, attracting bees, hoverflies and numerous other beneficial insects into the garden.

For many gardeners, Calendula serves a dual purpose.
It is both beautiful and useful.

The flowers brighten vegetable beds, cottage gardens and herb borders while quietly providing a continuous supply of fresh medicinal blooms throughout the growing season.
Perhaps that is one of the reasons Calendula has remained such a favourite for generations.
It asks for little.
Yet gives abundantly.

A Flower That Continues to Give

Some medicinal plants impress us with their complexity.
Others earn our admiration through their quiet dependability.
Calendula belongs firmly in the second group.

It asks for little more than sunshine, a little space to grow and the occasional watering during dry weather. In return, it offers months of vibrant flowers, attracts pollinating insects, brightens the garden and provides one of herbal medicine’s most versatile medicinal flowers.

Perhaps that is why Calendula has remained so deeply loved throughout history.

Not because it is rare.
Not because it is difficult to cultivate.
But because it is generous.
Every flower picked encourages another to bloom.
Every harvest reminds us that nature often responds to care with abundance.

There is something wonderfully reassuring about that.

From Garden to Medicine

One of the greatest pleasures of growing medicinal herbs is witnessing their complete journey.

Calendula begins as a cheerful garden flower, is harvested by hand, carefully dried and then transformed into oils, tinctures, teas and topical preparations. Every stage has its own purpose, and every stage connects us a little more closely with the remarkable plants growing around us.

Catherine’s Herbal Notes

Harvest: June–September

Parts used: Flowers (fresh or dried)

Favourite preparations: Infused oil and tincture

Grown in: My medicinal herb garden, County Wexford, Ireland

Calendula never seems to tire of giving. The more flowers I harvest, the more generously it blooms. Opening a jar of dried petals in winter is rather like opening a little piece of summer.

Final Thoughts

Every herb has its own personality.
Some command attention through their strength.
Others through their mystery.
Calendula does neither.
Instead, it quietly earns our trust.

Its bright flowers have accompanied herbalists, gardeners and families for centuries, bringing colour to the garden and comfort to the home. Long before modern skincare products lined pharmacy shelves, Calendula had already found its place in oils, creams, salves and herbal preparations made with patience and care.

Today, science continues to explore the remarkable chemistry contained within these golden flowers, while gardeners continue to sow the same familiar seeds each spring, knowing they will once again be rewarded with months of cheerful blooms.

Perhaps that is Calendula’s greatest lesson.
Sometimes the simplest plants become the most faithful companions.
They ask us to slow down.
To notice the changing seasons.
To appreciate beauty alongside usefulness.

And to remember that some of nature’s finest medicines have been growing quietly in our gardens all along.

I hope you feel inspired to step outside, notice the remarkable plants growing around you and continue exploring the wonderful world of herbal medicine.

Look after your body, and it will help look after you.

Catherine

CWD | 17 July 2026 | Ireland

Holistic Healthcare Wexford
Integrative · Mindful · Patient-Centred

About the Author

Dr Catherine W. Dunne MSc.D., RGN (GPN), M.H.I.T. is a Registered General Nurse with over 37 years of clinical experience in primary care in Ireland. Alongside her work in General Practice Nursing, she is the founder of Holistic Healthcare Wexford and co-founder of Aumvedas Academy.

With a background that bridges conventional nursing, herbal medicine and holistic practice, Catherine has a particular interest in helping people understand the relationship between traditional botanical knowledge, modern scientific evidence and whole-person wellbeing.

Through a combination of clinical expertise and holistic support, she is passionate about empowering people to make informed choices about their health while respecting both evidence-based medicine and the long tradition of herbal practice.

Based in Wexford, Ireland.

Disclaimer

This article is intended for informational and educational purposes only and should not be considered medical advice. It is not a substitute for consultation with a qualified healthcare professional. Always seek appropriate medical guidance regarding your individual health needs before making changes to your treatment, medication or healthcare plan.

Hawthorn: A Beginner’s Guide to Its Health Benefits and Uses

By Dr Catherine W Dunne MSc. D., RGN, Reiki Master (RGMT), M.H.I.T: Master Acupressure, Practitioner of Reflexology, Aromatherapy, Deep Tissue/Myo-fascia Massages, Infrared Treatments, Vibrational Sound and Colour Therapist, Tissue Salt Advisor, Pendulum Healing Dowser, Chakra Practitioner , Tao Cosmic Healing Practitioner, Practitioner of Plant and Herb Medicine and Nurse.

Hawthorn (Crataegus) is a small, thorny tree that has been used in herbal medicine for centuries. Its leaves, flowers, and bright red berry-like fruits—known as “haws”—have traditionally been used to support heart health, digestion, and overall well-being.

Today, modern research is beginning to confirm what herbalists have long known: hawthorn contains powerful plant compounds that may help protect the heart, regulate blood sugar, and even fight harmful bacteria. In this beginner-friendly guide, we’ll explore the benefits of hawthorn, how to use it safely, and what dosage is recommended.


What Is Hawthorn?

Hawthorn is a plant that belongs to the Rosaceae (rose) family. While there are hundreds of species, the most commonly used medicinal variety is Crataegus monogyna. This tree is native to Europe but is also found in North America and North Africa.

How to make hawthorn vinegar - Discover WildlifeHawthorn is often recognized by its small red fruits, which resemble berries but actually contain a seed or “stone,” making them more like miniature apples. The plant has been used in Traditional Chinese Medicine (TCM), European herbalism, and Native American healing traditions for centuries.


Health Benefits of Hawthorn

1. Heart Health and Blood Pressure Support

Hawthorn is widely known for its cardiovascular benefits. Scientific studies suggest it may help:

Improve circulation by dilating blood vessels and increasing blood flow
Lower cholesterol and reduce harmful fats in the blood
Support healthy blood pressure levels
Protect the heart with its strong antioxidant and anti-inflammatory properties

A 2020 scientific review found that hawthorn may help prevent atherosclerosis, a condition where arteries narrow due to plaque buildup. However, if you have a heart condition or take medication for blood pressure, consult your doctor before using hawthorn.


2. Blood Sugar and Diabetes Management

If you struggle with high blood sugar or diabetes, hawthorn may be beneficial. A 2022 review found that hawthorn:

✔ Helps regulate blood sugar and insulin levels
Lowers triglycerides (a type of fat in the blood linked to diabetes complications)
✔ Reduces inflammation and oxidative stress in the body
✔ Improves the function of pancreatic cells, which help regulate blood sugar
✔ May help reduce factors that can lead to obesity

While promising, most of these studies were done on animals. More human research is needed before hawthorn can be recommended as a treatment for diabetes.


3. Antioxidant and Anticancer Properties

Hawthorn berries are rich in polyphenols, a type of antioxidant that fights cell damage. A 2021 study found that hawthorn extracts:

Killed brain tumour cells in lab tests
✔ Inhibited the growth and spread of harmful cells

This suggests hawthorn may have anticancer potential, but much more research is needed before it can be considered a cancer treatment.


4. Digestive Health and Gut Support

Traditionally, hawthorn has been used to aid digestion. Studies suggest it may:

Speed up digestion by increasing gut motility
Reduce bloating and indigestion
✔ Act as a natural prebiotic, supporting good gut bacteria

Animal studies show that hawthorn extracts help food move through the digestive tract faster, but human studies are still needed.


5. Antimicrobial and Immune-Boosting Benefits

Hawthorn may help fight infections due to its natural antibacterial properties. A 2020 study indicated that the berries of Crataegus azarolus, which is a hawthorn species that grows in the Mediterranean, may be effective against seven different microorganisms and gram positive bacteria. Antimicrobial substances may kill or prevent the growth of potentially harmful microorganisms:

✔ Were effective against seven types of harmful bacteria
✔ Contained complex carbohydrates and antioxidants that may support the immune system

This suggests hawthorn could be useful in natural cold and flu remedies.


How to Use Hawthorn: Forms & Dosage Recommendations

1. Fresh or Dried Berries

How to Use:
✔ Eat fresh berries in small amounts
✔ Make hawthorn tea (steep dried berries in hot water for 10–15 minutes)
✔ Use dried berries in herbal blends

Dosage:
Tea: 1–2 teaspoons of dried berries per cup, up to 3 times daily


A bottle of liquid with dropper bottles

AI-generated content may be incorrect.2. Hawthorn Tincture (Liquid Extract)

How to Use:
✔ Add drops to water or juice
✔ Usually comes in alcohol or glycerine-based extracts

Dosage:
Tincture: 1–2 ml (20–40 drops) up to 3 times daily


3. Capsules or Tablets

Many people prefer standardized hawthorn supplements, which contain a concentrated dose of the active compounds.

Dosage:
Capsules: 250–500 mg up to 3 times daily

Always check the label of your supplement, as potency can vary.


4. Hawthorn Powder

This can be mixed into smoothies, yogurt, or herbal blends.

Dosage:
Powder: 1–3 grams daily (around ½ to 1 teaspoon)


Safety, Side Effects, and Who Should Avoid Hawthorn

Hawthorn is generally safe, but some people may experience mild side effects, including:

❌ Nausea
❌ Dizziness
❌ Digestive upset

Who Should Avoid Hawthorn?

🚫 Pregnant or breastfeeding individuals (lack of safety data)
🚫 People taking heart or blood pressure medication (may cause interactions)
🚫 Anyone on blood thinners (hawthorn may have mild blood-thinning effects)

Possible side effects and interactions 

The National Center for Complementary and Integrative Health (NCCIH)  notes that scientists have not reported any serious safety problems in most studies of hawthorn for heart failure.

However, it mentions one study that indicated hawthorn worsened heart failure in study participants. This may have been because hawthorn interacted with the drugs they were taking.

This is why it is important that people who wish to try hawthorn talk with their doctor first, especially if they are taking medication.

The NCCIH also states that hawthorn may cause side effects, including:

  • nausea
  • dizziness
  • digestive symptoms

If you have a medical condition or take medication, consult your doctor before using hawthorn.


Frequently Asked Questions About Hawthorn

1. Can I take hawthorn every day?

Yes, hawthorn can be taken daily, but it’s best to start with a low dose and increase gradually under medical guidance.

2. How long does it take to see results?

For heart health benefits, 4–8 weeks of consistent use may be needed.

3. Are hawthorn berries safe to eat?

Yes! Hawthorn berries are not poisonous. But avoid eating the seeds, as they contain amygdalin, which can convert into cyanide in large amounts.

4. What does hawthorn taste like?

Hawthorn berries have a mildly sweet and tart flavour, similar to crab apples.


Final Thoughts: Is Hawthorn Right for You?

Hawthorn is a powerful herbal remedy that has been used for centuries to support heart health, digestion, and immune function. While modern science is uncovering its potential benefits, more research is needed, especially in areas like diabetes and cancer prevention.

If you’re interested in trying hawthorn, start with a tea, tincture, or capsule, and always consult your doctor if you have underlying health conditions.

By incorporating hawthorn into your routine safely and mindfully, you can enjoy its many potential health benefits in a natural and effective way.

I make small batches of Hawthorn Tincture. Small batches at a time, depending on demand. I am lucky to have two types of Hawthorn growing as our natural hedge. The Black-Thorn is the Sloe; related to the Plum family. Making a Sloe Gin with adding plums is most Delicious.

From May onwards in start collecting their blossoms. I dry them and store them until I need them. Usually come Winter, I start making the tinctures. From September I forage the red Hawthorn Berries.

I prefer to dehydrate the berries before using them with the dried flowers from May.

Most Hawthorn Tinctures you purchase from Health Shops or Amazon are 25% alcohol. I use 40%. You get a longer shelf life and usage.

Directions of use for my Holistic Healthcare Wexford (H.H.C.) Hawthorn Tincture:

1 ml or 10 drops, using the dropper, in lukewarm water once daily.

Notes on intake / dosage instructions, type and duration of use:

Always take this medicine exactly as described in this leaflet or exactly as directed by your doctor, pharmacist or nurse. Check with your doctor or pharmacist or nurse if you are unsure.

Dosage:

Adults: Adults take 1 ml or 10 drops H.H.C. Hawthorn Herbal drops once daily.

Usage in case of impaired renal function:

There is no sufficient data for specific dosage recommendations for impaired kidney function.

Usage in children and adolescents

It is not intended to be used in children and adolescents under the age of 18.

Method of administration:

To be taken orally with water.

Duration of use:

In the case of symptoms of unclear cause, self-medication should be stopped after two weeks.

Storage Instructions and Shelf Life:

Keep medicines out of the reach of children.

Do not store above 25 °C.

Shelf life after opening:

6 months.

I hope you feel inspired. Look after your body, and it will keep you healthy.

Catherine

CWD 28 February 2025/Ireland