The Astonishing Health Benefits of Edible Nasturtiums: A Culinary and Medicinal Marvel

The astonishing health benefits of edible nasturtiums

Edible nasturtiums are more than just bright flowers for the edge of a garden bed. They bring a punchy, peppery flavor to the plate and have a long history in folk herbalism as a cleansing, immune-supporting, and gently stimulating plant.
For many people exploring agritourism, discovering nasturtiums on a working farm becomes a gateway into tasting, growing, and using one of the most approachable medicinal ornamentals.

Context: what makes nasturtiums special?

Nasturtiums (Tropaeolum majus) are trailing or bushy plants with round leaves and vivid orange, yellow, or red flowers. Almost every above-ground part is edible: leaves, flowers, and young seeds.
They are widely grown in home gardens and on small farms because they are easy to cultivate, attract pollinators, and can be harvested repeatedly through the growing season.

From a nutrition and phytochemical perspective, nasturtiums are notable for several reasons:

• Rich in vitamin C and minerals – Studies report that nasturtium flowers and leaves contain vitamin C along with potassium, phosphorus, calcium, magnesium, zinc, copper, and iron.[6][3]
• High antioxidant activity – Extracts from the plant show antioxidant effects linked to compounds such as anthocyanins, polyphenols, and vitamin C.[6][3]
• Bioactive plant compounds – Nasturtiums contain glucosinolates and mustard-oil glycosides, which are associated with antimicrobial and circulatory effects.[5][4]

Because of this combination of nutrients and active compounds, nasturtiums are being investigated for potential roles in supporting the respiratory system, digestion, circulation, and healthy microbial balance.[6][3][4]

Key terms

Glucosinolates – Sulfur-containing plant compounds found in nasturtiums and mustard family plants; when broken down, they form pungent substances with potential antimicrobial activity.[5][4]

Antioxidants – Molecules that help neutralize free radicals, which can contribute to cellular damage over time; examples in nasturtiums include vitamin C, lutein, anthocyanins, and polyphenols.[6][3]

Antimicrobial – A general term for substances that may help inhibit the growth of microorganisms such as certain bacteria, fungi, or viruses in laboratory or traditional-use contexts.[6][3][5]

Expectorant – A substance traditionally used to help loosen and move mucus from the respiratory tract.[2][3]

Diuretic – A substance that increases urine production; some herbs with diuretic activity may be used to support the urinary system under professional guidance.[4][6]

Health benefits framework: how nasturtiums may support wellbeing

Research on nasturtiums is growing but still limited. Much of what we know combines lab and clinical studies with a long record of traditional use. Nasturtiums should be seen as a complementary food-herb, not a stand-alone treatment.

1. Nutrient-dense immune support

The leaves and flowers of nasturtiums provide vitamin C, a nutrient known to support normal immune function.[6][3] One analysis reported that nasturtium flowers may contain a vitamin C content in a similar range to highly nutrient-dense herbs like parsley.[3] Vitamin C intake has been studied for its role in maintaining normal immune responses and reducing the duration of common respiratory infections in some contexts.
In addition, nasturtiums include minerals such as iron, zinc, and copper, which are involved in immune and antioxidant enzyme systems.[6][3]

According to a review on garden nasturtiums, antioxidant activity from anthocyanins, polyphenols, and vitamin C is believed to contribute to potential benefits for the respiratory and digestive systems.[6] This antioxidant profile may support the body’s natural defenses against oxidative stress.

2. Traditional respiratory support

Nasturtium preparations have been used traditionally as teas, tonics, or fresh leaves to help soothe minor respiratory discomforts such as simple colds or throat irritation.[3][2] Some herbal practitioners describe nasturtiums as an expectorant, helping to loosen mucus and clear the airways.[2][8]

Several sources note that nasturtiums have been used alongside other herbs to support the upper respiratory tract, especially when there is congestion or a tendency toward recurrent mild infections.[2][3][4]

“Nasturtium is a warming, pungent herb with notable influence on the respiratory and cardiovascular systems, used traditionally to support circulation and help the body respond to minor infections.” – Herbal practitioner summary based on material from Herbal Reality (herbalreality.com)

It is important, however, to view these uses as complementary. Persistent, severe, or worsening respiratory symptoms require medical assessment.

3. Potential antimicrobial and infection-related uses

Laboratory and traditional-use evidence suggests nasturtiums may have notable antimicrobial potential:

• Natural antibiotic-like activity – The plant contains glucosinolates and mustard seed oils that have been shown to act against various bacteria, viruses, and fungi in experimental settings.[5][4][6]
• Broad antimicrobial spectrum – Extracts and essential oils from leaves and flowers demonstrate antimicrobial, antifungal, and antiseptic properties in lab studies.[6][3]
• Traditional infection support – Herbal sources describe nasturtiums being used to help with minor respiratory infections, superficial skin infections, and as a supportive herb in urinary discomfort, often alongside other plants.[2][4][8]

A video from an established reference publisher notes that nasturtiums, when taken together with horseradish, have been used to manage uncomplicated bladder infections and that this combination performed comparably to some conventional options in certain clinical evaluations.[5] These findings are early and require more robust trials.

Important safety note: Self-treating any suspected infection carries risks. Bladder, kidney, and respiratory infections can become serious. Nasturtiums may be considered only as a complementary food-herb under the guidance of a qualified clinician.

4. Circulation, inflammation, and cardiovascular markers

Herbal traditions describe nasturtiums as a warming, stimulating herb for circulation, especially in peripheral tissues.[4] The pungent mustard oils are thought to encourage blood flow in the skin and muscles, and nasturtiums are sometimes used to support minor muscular aches or slow-healing superficial wounds.[4]

Experimental studies suggest:

• Anti-inflammatory effects – Nasturtium extracts may help modulate inflammatory pathways and reduce certain inflammatory markers in cell and animal models.[3][4]
• Diuretic and blood pressure-related activity – Some research reports diuretic and blood pressure-lowering effects in controlled settings, possibly linked to the plant’s antioxidant and vascular actions.[4][6]
• Effects on cardiovascular risk markers – One small trial in individuals with metabolic concerns found improvements in blood lipid profiles, including lower low-density lipoprotein (LDL) and oxidized LDL levels in those consuming nasturtium preparations.[4]

Although these findings are promising, they involve small sample sizes and specific extracts. They should not be interpreted as proof that nasturtiums prevent or treat cardiovascular disease.

5. Skin, hair, and topical uses

Gardeners and herbalists have long used nasturtiums externally:

• Mild antiseptic washes – Crushed leaves or cooled teas are sometimes applied to minor scrapes or superficial wounds as a traditional antiseptic measure.[1][2]
• Oily or acne-prone skin – Toners made from nasturtium tea are described as helping balance oily skin and support a clearer complexion for some users.[1][7]
• Hair and scalp circulation – Applying nasturtium tea or infused preparations to the scalp is thought to stimulate local circulation and support hair vitality.[1][4]

These uses are based largely on traditional practice and smaller studies; individual responses vary. People with sensitive skin may wish to patch-test any new preparation.

6. Digestion, appetite, and urinary support

The peppery bite of nasturtium leaves and flowers can gently stimulate digestion in some people, much like watercress or rocket:

• Digestive stimulation – Herbal sources describe nasturtiums as appetite-boosting and digestion-stimulating, especially when eaten fresh in salads.[1][7]
• Urinary tract support – Due to their mild diuretic and antimicrobial properties, nasturtiums may be included by herbal practitioners in blends to support urinary tract comfort under medical supervision.[4][5][2]

Again, these uses should complement, not replace, evidence-based diagnosis and treatment.

Culinary guide: enjoying nasturtiums as food

One of the most appealing aspects of nasturtiums is how easily they slip into everyday cooking. Eating them regularly as part of a varied diet may be a gentle way to access some of the plant’s potential benefits.

What parts of the plant are edible?

• Leaves – Round, lily-pad-like leaves with a fresh, peppery flavor similar to cress.
• Flowers – Brightly colored blossoms that taste slightly milder and sweeter, with a lingering spice.
• Green seeds – Young, unripened seeds that can be pickled and used as a peppery condiment.

Healthy plants grown away from pollution or chemical sprays are best for culinary use.

Simple ways to eat nasturtiums

• Salad star – Toss a few leaves and flowers through mixed greens for color and a peppery lift.
• Herbal pesto – Blend nasturtium leaves with nuts or seeds, olive oil, garlic, and a little cheese for a spicy green pesto.[1]
• Stuffed blossoms – Fill the flowers with soft cheese, herbed spreads, or grain-based mixes for a striking starter.
• Pickled “capers” – Brine the green seeds in vinegar and salt to create a piquant garnish similar in use to capers.
• Infused oils and butters – Lightly bruise leaves and flowers into softened butter or oil to serve with bread, corn, or steamed vegetables.

On agritourism farms, nasturtiums often appear in field-to-table meals, grazing platters, and tasting menus where visitors can experience the plant fresh from the garden.

Tea and tonics

Nasturtium tea is a classic folk preparation:

• Steep a small handful of fresh leaves and flowers in hot (not boiling) water for several minutes.
• Strain and drink warm, sometimes with honey or lemon, as a gentle daily tonic.[1][2]
• Some people also use cooled tea as a skin toner or scalp rinse, as described earlier.[1]

Strength, frequency, and suitability can vary by person; those with medical conditions, pregnancy, or regular medications should discuss herbal teas with a health professional.

Tips, cautions, and common mistakes

Practical tips for using nasturtiums

• Start small – Introduce nasturtiums in modest amounts to see how your digestion and taste respond.
• Rotate with other greens – Enjoy nasturtiums as part of a diverse mix of leafy and flowering vegetables.
• Harvest thoughtfully – Pick in the cooler parts of the day for crisp texture and more vibrant flavors.
• Rinse gently – Wash leaves and flowers in cool water and pat dry to preserve their structure.
• Use fresh soon – Nasturtiums are best shortly after harvest; refrigeration in a breathable container can extend freshness briefly.

Common mistakes to avoid

• Assuming “natural” means risk-free – Nasturtiums are generally considered safe as food, but larger medicinal doses or extracts may not be appropriate for everyone.[3][4]
• Self-treating serious conditions – Relying on nasturtiums alone for urinary, respiratory, or cardiovascular problems can delay needed treatment.
• Overharvesting from stressed plants – Taking too many leaves from a single plant can weaken it; spread harvesting across multiple plants.
• Ignoring allergies or sensitivities – Pungent, mustard-like herbs may occasionally irritate the stomach or skin; discontinue use if you notice discomfort.
• Using plants from contaminated areas – Avoid harvesting from roadside verges, heavily sprayed lawns, or unknown properties.

A gentle conclusion: a small plant with big character

Nasturtiums sit at a beautiful crossroads: they are vibrant ornamentals, flavorful salad herbs, and longstanding allies in folk herbalism. Used as part of a varied diet and a thoughtful lifestyle, they may offer gentle support for immune health, circulation, digestion, skin, and overall vitality.

For agritourism visitors and growers, nasturtiums can become a memorable introduction to how food, plant medicine, and landscape design can overlap in one hardy, joyful plant.

FAQ about edible nasturtiums and health

Are nasturtiums really good for you?

Nasturtiums are considered a nutrient-dense edible flower, providing vitamin C, minerals, and antioxidant compounds.[6][3] Traditional and emerging scientific sources suggest they may offer gentle support for immune, respiratory, and cardiovascular health, especially when eaten as part of a balanced diet.[6][3][4]

Which parts of nasturtiums are safe to eat?

The leaves, flowers, and young green seeds are commonly eaten. Herbal and horticultural sources confirm that all aerial parts are generally edible when grown in safe conditions.[2][3][6]

Can nasturtiums treat infections on their own?

Lab studies and traditional use indicate nasturtiums have antimicrobial properties, and some clinical work has explored combinations like nasturtium with horseradish in mild urinary infections.[5][6][4] However, they should not be relied on as a sole treatment; medical evaluation is important for any suspected infection.

How much nasturtium can I safely eat?

There is no universal serving size, but many people use a small handful of leaves or flowers in salads or dishes. Because of their pungency and potential diuretic effects, it may be wise to start with modest amounts and adjust according to comfort, especially if you have underlying health conditions.[3][4]

Who should be cautious with nasturtiums?

People who are pregnant, breastfeeding, managing kidney or cardiovascular conditions, or taking regular medications should consult a qualified health professional before using nasturtiums in medicinal quantities.[3][4][6] Those with known sensitivities to mustard-family plants or pungent herbs may also wish to use caution or avoid them.

Can I use nasturtiums on my skin?

Some herbal traditions apply crushed leaves or cooled teas to minor scrapes, oily skin, or the scalp, making use of nasturtiums’ mild antiseptic and circulatory effects.[1][4] Always patch-test first, and avoid applying to deep, large, or serious wounds without medical advice.

Safety notes and key sources

Safety notes

• Nasturtiums are generally recognized as safe as a food plant when grown in clean conditions, but individual responses vary.
• Medicinal or concentrated use should be discussed with a healthcare professional, especially for people with chronic illnesses, during pregnancy, or alongside prescription medications.
• Never ignore or delay professional care for urinary, respiratory, cardiovascular, or skin conditions in favor of herbal self-treatment.

Selected primary and research-oriented sources

• Garden nasturtium (Tropaeolum majus L.) – PubMed (National Library of Medicine)
• Multiple Benefits of the Nasturtium Plant – Encyclopaedia Britannica
• Nasturtium – Herbal Reality
• Nasturtium Uses & Benefits – DrAxe.com

These sources discuss nasturtium’s nutrient profile, antioxidant content, and potential antimicrobial and cardiovascular-related actions in more technical detail.[6][5][4][3]

About the author

The Rike explores agritourism, farm-based food traditions, and plant-centered wellness, weaving together practical growing tips, emerging research, and stories from working landscapes to help readers connect more deeply with the plants on their plate.