Calendula in History: What the Records Actually Show

The history of calendula is thinner and more specific than "ancient medicine" copy suggests. In the dated sources we could check, calendula shows up in antiquity mainly as a garland flower, gets its first pharmacopoeial listing around the turn of the 14th century, and reaches a regulator's desk in 2008 as a "traditional use" herb. Several of the best-known stories, including wartime wound use, have no source behind them at all. We make one oil, so this page sticks to what can be dated and says where the record runs out.

Calendula oil bottle

Calendula Oil

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The name and the plant

The genus name Calendula comes from the Latin kalendae, the first day of the month. The usual explanation is the plant's long, almost monthly flowering, though one scholarly overview argues the original sense was the first day of the year (Touwaide and Appetiti, AHPA, 2023). Extension services place the plant as a cool-season annual native to Europe and the Mediterranean (Graves et al., UF/IFAS, FPS87). An older 1911 account calls it native to Eastern Asia, which modern sources do not support, so we use the extension source.

What the earliest records say

The AHPA's "Herbs in History" essay is the best single scholarly overview we found, and its account is more sceptical than most marketing. As summarised there:

We read that essay through a summary rather than the original page, and it cites no page-level sources for these points, so treat it as a lead and not as a final word. Even so, the pattern is clear: sparse before the late Middle Ages, then a run of 16th-century herbals. A 2023 review says calendula "has been used medicinally since the 12th century," citing two references we did not check (Shahane et al., Pharmaceuticals, 2023), which fits a late-medieval start but is not independent confirmation.

Claims we could not document

These come up constantly, and we left them out for the reasons given.

What can be sourced is more modest. A 1911 history of the US Pharmacopoeia's vegetable drugs notes that marigold was in medieval herbals and pharmacopoeias and was carried to North America before 1670 (Lloyd, 1911, reproduced online). The Shahane review mentions the petals' use as an inexpensive substitute for saffron.

How a flower became an "oil"

An infused oil is a simple idea: plant material in a fixed oil. What can be dated is when regulators wrote it down. The EU herbal monograph defines the oil preparation of calendula flowers as a 1:10 extract in a fatty vegetable oil such as olive oil, classed as traditional use only, resting on long-standing use and not on trials (EMA/HMPC, 2018). Calendula flower was added to the EU inventory in 2005, got its first Community monograph in March 2008 and a revised one in March 2018. Traditional-use status requires at least 30 years of use, 15 of them in the EU (EMA, Calendulae flos summary, 2018). The 2008 assessment report adds that fat-based ointments were traditionally prepared by warm digestion, with extraction times up to 16 hours (EMA/HMPC assessment report, 2008).

The colour has its own dated history. The 2022 phytochemical review recounts that Kylin (1926) attributed the flower's colour to a carotenoid he called "calendulin," and that Zechmeister and von Cholnoky (1932) characterised it as a mixture of lycopene and violaxanthin; about a hundred carotenoids have since been identified in the species (Olennikov and Kashchenko, Molecules, 2022).

Three tests for a history claim

When a page says calendula "has been used for centuries," here is how we sort it, and how you can:

  1. Is there a date? "Since the 12th century" or "in the 1597 Herball" can be checked. "Since ancient times" cannot.
  2. Is there a document? A named herbal, pharmacopoeia or regulatory text beats a quote from a modern speaker with no reference.
  3. Does the document say what the claim says? A garland mention in Theophrastus is not a medical use, and a regulator's "traditional use" label is not a finding that it works.

By those tests, the late-medieval herbals and the EU monographs hold up. The wartime stories and the quotation-only traditions do not, yet. If someone does turn up a contemporary record, we would update this page.

What age of use does and does not tell you

Long use is a reason to take a plant seriously and a poor measure of whether a particular oil does anything. The EU committee that granted traditional-use status says in its public summary that clinical studies "did not support firm conclusions because of design problems," so the support rests on tradition, not trial results. And the same record that lists calendula as traditional also lists hypersensitivity to daisy-family (Asteraceae) plants as a contraindication and says skin sensitization has been reported, frequency unknown. Use on skin under age 6 is not recommended for lack of data, and safety in pregnancy and breastfeeding has not been established. If any of that applies to you, ask a dermatologist, pediatrician or OB/GYN, not a history page.

Modern reviews list small clinical studies on diaper dermatitis, radiation dermatitis and wounds, but the same EU committee considered that evidence insufficient for more than traditional use. History gives a reason to study the plant. It does not substitute for the studies, which were mostly of extracts and ointments rather than infused oils.

For our oil, the history we can claim is a short one. We buy flowers that are dried naturally by traditional methods, without industrial heat or forced air, from the same growers for over a decade. We infuse whole petals separated by hand and finish in-house, and we date and lot-number every bottle so the paperwork can be matched to it. How that compares with older practice, we cannot say, and we are not going to invent a lineage. Our guides to drying flowers and to extraction methods cover the modern craft, and where it comes from covers ours.

Calendula oil bottle

Calendula Oil

Nature's Golden Botanical, bottled: small-batch calendula oil in sizes from 0.5 oz to bulk.

From $13.99

Shop Calendula Oil →

Sources & Further Reading