Plant Profile

Pot marigold

Calendula officinalis
Family: Asteraceae  ·  Parts used: Flower, Petals  ·  Also known as: Calendula, common marigold

The complete database record: 3 documented constituents, 7 pharmacological actions, 8 traditional / indicated uses, with 18 cited sources.

Botanical Description

Aromatic annual or short-lived perennial herb with soft, hairy, oblong leaves and branching, slightly sticky stems. The flower heads are bright orange to yellow, daisy-like, with numerous narrow ray florets surrounding a darker central disc, opening in sunlight and closing at dusk.[1]

Height: 30-60 cm
Habit: Erect, branching annual or short-lived perennial herb
Leaves: Soft, hairy, oblong to lance-shaped
Flowers: Bright orange to yellow, daisy-like flower heads with numerous narrow ray florets
Stem: Branching, softly hairy, slightly sticky
Root: Shallow taproot
Fruit: Curved, ridged achene, without pappus
Flowering Period: June to first frost

Habitat & Distribution

Widely cultivated as a garden and medicinal plant; believed native to southern Europe and the Mediterranean, now naturalised in gardens and waste ground worldwide.[1]

Harvesting

The flower heads (or just the ray-floret petals) are picked by hand as they open, through the flowering season, and dried quickly in a warm, shaded, airy place to preserve colour and resin content.[1]

Parts: Flower, Petals
Season: Through the flowering season (summer to autumn), as flowers open

Key Constituents

Triterpene saponins (oleanolic acid glycosides, calendulosides)[1]

Principal wound-healing and anti-inflammatory constituents of the flower.

Triterpene saponinsSaponins
Flavonoids and carotenoids[4]

Antioxidant flavonoids and carotenoids give the flower its orange-yellow colour and contribute to its antioxidant activity.

FlavonoidsCarotenoids
Essential oil and resin[1]

Minor aromatic and resinous constituents of the flower head.

Essential (volatile) oil

Pharmacological Actions

Anti-inflammatory[2, 6, 8, 14, 15, 16]
Anticancer (preclinical)[2, 4, 17]

Calendula officinalis extracts show cytotoxic antitumor, pro-apoptotic and antimetastatic activity across many cancer cell lines and in animal models (preclinical).

Antifungal[14, 15, 16]
Antimicrobial[7, 14, 15, 16]
Antioxidant[4, 10, 14, 15, 16]
Emollient / skin-soothing[14, 15, 16]
Vulnerary (wound healing)[1, 5, 9, 14, 15, 16]

Traditional & Indicated Uses

Arthritis / joint pain[14]Preliminary · 1/10

inferred from anti-inflammatory action

Mechanistic Exclude Ids: REF-0183, REF-0199, REF-2128
Evidence: 1
Label: Arthritis / joint pain

more plants for arthritis / joint pain →detailed sources →

Bruising[14, 15, 16]Moderate · 5/10

inferred from vulnerary action

Evidence: 5
Label: Bruising

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Cancer (anticancer research)[2, 4, 17]Good · 7/10

A Calendula officinalis (LACE) aqueous extract inhibits proliferation (70-100%) of leukemia, melanoma, breast, prostate, lung and colon cancer cell lines via G0/G1 arrest and caspase-3 apoptosis and inhibits melanoma growth in nude mice; a systematic review documents its cytotoxic and antimetastatic antitumour activity (preclinical).

Evidence: 7
Label: Cancer (anticancer research)

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Eczema[14, 15]Moderate · 5/10

inferred from emollient action

Mechanistic Exclude Ids: REF-0199
Evidence: 5
Label: Eczema

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Infection (general)[14, 15]Moderate · 5/10

inferred from antifungal action

Mechanistic Exclude Ids: REF-0199
Evidence: 5
Label: Infection (general)

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Inflammation (general)[14, 15, 16]Moderate · 5/10

inferred from anti-inflammatory action

Evidence: 5
Label: Inflammation (general)

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Skin irritation[14, 15, 16]Moderate · 5/10

inferred from anti-inflammatory action

Mechanistic Exclude Ids: REF-2128
Evidence: 5
Label: Skin irritation

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Wounds[14, 15, 16]Moderate · 5/10

inferred from antimicrobial action

Mechanistic Exclude Ids: REF-2127
Evidence: 5
Label: Wounds

more plants for wounds →detailed sources →

Traditional Use & History

Calendula flower is one of the most widely used topical wound-healing and skin-soothing herbs in Western herbal medicine, applied to cuts, grazes, minor burns and skin inflammation, and used internally as a gentle anti-inflammatory and antimicrobial remedy and as a gargle for mouth and throat irritation.[1]

Preparations

Infused oil[1]

Dried petals infused in a carrier oil, used as a soothing base for topical creams and balms for skin healing.

Cream/ointment[1]

Standardised flower extract formulated into a cream or ointment for topical wound and skin care; the best-studied modern form.

Infusion[13]

Dried flower infused in hot water, 1-2 g in 150 ml, used still warm as a mouth rinse or gargle 2-4 times daily. The EU herbal monograph's posology for this preparation is OROMUCOSAL only - it does not support taking the infusion internally. Educational reference only, not a prescription.

Dosage

Topical cream/ointment[13]

The EU herbal monograph gives semi-solid preparations containing the equivalent of 2-10% herbal substance, applied as a thin layer to the affected area 2 to 4 times daily. Educational reference only, not a prescription.

Infusion/gargle[13]

The EU herbal monograph gives 1-2 g of the flower in 150 mL water as an infusion, used still warm for rinsing and gargling 2 to 4 times daily, or to prepare impregnated dressings for the skin. This is an oromucosal and cutaneous preparation, not an oral tea. Educational reference only, not a prescription.

Safety, Cautions & Contraindications

Safety note[14, 15, 16]Caution

Generally very safe for topical use. May cause contact dermatitis in rare cases (Asteraceae family allergy). Internal use is safe in normal doses. Avoid during pregnancy at therapeutic doses (uterine stimulant potential). Generally safe during breastfeeding for topical use.

Safety note[14, 15, 16, 18]Info

Duke (2002) rates calendula (Calendula officinalis) and notes anti-inflammatory, wound-healing (vulnerary), antifungal, and antispasmodic activities at experimental levels. Commission E (KOM) approves calendula flower for wound healing and anti-inflammatory uses, both topically and as a gargle. The plant contains flavonoids, triterpene saponins (oleanolic acid glycosides), and essential oils. Dose: 1–2 g dried flower as tea (for mouth rinse/gargle); or as cream/ointment containing 2–5% calendula extract for topical use. Duke notes that calendula is generally very well-tolerated, though Asteraceae sensitivity can occasionally cause allergic reactions (Duke, 2002).

Harvest Readiness

[12]

Part: flower
Signals: Pick the flower heads (from which the petals are stripped) when fully open, through the flowering season; dry quickly in the shade.
Basis: traditional
Source Quote: The flowers are also used fresh or dried, for drying they are harvested when fully open and need to be dried quickly in the shade
Species Confirmed: 1
Notes: Useful Temperate Plants (REF-3217) for Calendula officinalis. Both parts_used labels (Flower and Petals) resolve to the flower head, picked when fully open. Single source -> provisional.

External Identifiers

References & Sources

  1. Givol, O., Kornhaber, R., Visentin, D., Cleary, M. et al (2019) 'A systematic review of Calendula officinalis extract for wound healing', Wound Repair and Regeneration, 27(5), pp. 548-561. doi:10.1111/wrr.12737 Meta-analysis / review
    https://doi.org/10.1111/wrr.12737
  2. Shahane, K., Kshirsagar, M., Tambe, S., Jain, D. et al (2023) 'An Updated Review on the Multifaceted Therapeutic Potential of Calendula officinalis L', Pharmaceuticals (Basel), 16(4), pp. 611. doi:10.3390/ph16040611 Traditional / reference
    https://doi.org/10.3390/ph16040611
  3. Saffari, E., Mohammad-Alizadeh-Charandabi, S., Adibpour, M., Mirghafourvand, M. et al (2016) 'Comparing the effects of Calendula officinalis and clotrimazole on vaginal Candidiasis: A randomized controlled trial', Women & Health, 57(10), pp. 1145-1160. doi:10.1080/03630242.2016.1263272 Randomized trial
    https://doi.org/10.1080/03630242.2016.1263272
  4. Cruceriu, D., Balacescu, O. and Rakosy, E (2018) 'Calendula officinalis: potential roles in cancer treatment and palliative care', Integrative Cancer Therapies, 17(4), pp. 1068-1078. doi:10.1177/1534735418803766 Meta-analysis / review
    https://doi.org/10.1177/1534735418803766
  5. Rezai, S., Rahzani, K., Hekmatpou, D. and Rostami, A (2023) 'Effect of oral Calendula officinalis on second-degree burn wound healing', Scars, Burns & Healing, 9, pp. 20595131221134053. doi:10.1177/20595131221134053 Randomized trial
    https://doi.org/10.1177/20595131221134053
  6. Kadowaki, W., Miyata, R., Mizuno, S., Fujinami, M., Sato, Y. and Kumazawa, S (2023) 'Prenylated acetophenones from the roots of Calendula officinalis and their anti-inflammatory activity', Bioscience, Biotechnology, and Biochemistry, 87(7), pp. 683-687. doi:10.1093/bbb/zbad042 Preclinical
    https://doi.org/10.1093/bbb/zbad042
  7. Samra, R.M., Maatooq, G.T. and Zaki, A.A (2022) 'A new antiprotozoal compound from Calendula officinalis', Natural Product Research, 36(22), pp. 5747-5752. doi:10.1080/14786419.2021.2023868 Preclinical
    https://doi.org/10.1080/14786419.2021.2023868
  8. Kaur, J., Sidhu, S., Chopra, K. and Khan, M.U (2016) 'Calendula officinalis ameliorates l-arginine-induced acute necrotizing pancreatitis in rats', Pharmaceutical Biology, 54(12), pp. 2951-2959. doi:10.1080/13880209.2016.1195848 Preclinical
    https://doi.org/10.1080/13880209.2016.1195848
  9. Aro, A.A., Perez, M.O., Vieira, C.P., Esquisatto, M.A.M., Rodrigues, R.A.F., Gomes, L. and Pimentel, E.R (2014) 'Effect of Calendula officinalis cream on achilles tendon healing', Anatomical Record, 298(2), pp. 428-435. doi:10.1002/ar.23057 Preclinical
    https://doi.org/10.1002/ar.23057
  10. Zhang, X., Wang, R., Finiuk, N., Stoika, R., Lin, H., Wang, X. and Jin, M (2023) 'Active compounds from Calendula officinalis flowers act via PI3K and ERK signaling pathways to offer neuroprotective effects against Parkinson's disease', Food Science & Nutrition, 12(1), pp. 450-458. doi:10.1002/fsn3.3792 Preclinical
    https://doi.org/10.1002/fsn3.3792
  11. Kadowaki, W., Miyata, R., Fujinami, M., Sato, Y. and Kumazawa, S (2023) 'Catechol-O-methyltransferase inhibitors from Calendula officinalis leaf', Molecules, 28(3), pp. 1333. doi:10.3390/molecules28031333 Preclinical
    https://doi.org/10.3390/molecules28031333
  12. Fern, Ken 'Calendula officinalis (Pot Marigold) — Useful Temperate Plants'. Available at: https://temperate.theferns.info/plant/Calendula+officinalis Traditional / reference
    https://temperate.theferns.info/plant/Calendula+officinalis
  13. European Medicines Agency (HMPC) (2018) 'European Union herbal monograph on Calendula officinalis L., flos, Revision 1'. Available at: https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-calendula-officinalis-l-flos-revision-1_en.pdf Traditional / reference
    https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-calendula-officinalis-l-flos-revision-1_en.pdf
  14. Hoffmann, D (2003) 'Medical Herbalism'. Traditional / reference
    https://scholar.google.com/scholar?q=Medical%20Herbalism
  15. Nicolaus, C. et al (2017) 'A double-blind, randomized controlled trial to investigate the efficacy and safety of a monograph-based Calendula cream versus a comparator cream', 35(1), pp. 81--89. Randomized trial
    https://scholar.google.com/scholar?q=A%20double-blind%2C%20randomized%20controlled%20trial%20to%20investigate%20the%20efficacy%20and%20safety%20of%20a%20monograph-based%20Calendula%20cream%20versus%20a%20comparator%20cream
  16. Preethi, K.C. and Kuttan, R (2009) 'Wound healing activity of flower extract of Calendula officinalis', 20(1), pp. 73--79. doi:10.1515/jbcpp.2009.20.1.73 Preclinical
    https://doi.org/10.1515/jbcpp.2009.20.1.73
  17. Jimenez-Medina, E. and Garcia-Lora, A. and Paco, L. and Algarra, I. and Collado, A. and Garrido, F (2006) 'A new extract of the plant Calendula officinalis produces a dual in vitro effect: cytotoxic anti-tumor activity and lymphocyte activation', BMC Cancer, 6, pp. 119. doi:10.1186/1471-2407-6-119 Preclinical
    https://doi.org/10.1186/1471-2407-6-119
  18. Duke, J.A (2002) 'Handbook of Medicinal Herbs, Second Edition'. Traditional / reference
    https://scholar.google.com/scholar?q=Handbook%20of%20Medicinal%20Herbs%2C%20Second%20Edition

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Selected studies & references

Educational use only. This profile summarises traditional and scientific sources for reference. It is not medical advice and not a substitute for a qualified practitioner. Some plants carry safety cautions and drug interactions - always check before use.
This profile is assembled automatically from the Omnia Sana plant database, which we curate by hand. How this site is built.
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