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NL·0030PlantsAsteraceaeHerb26,556 field observations
Pot marigoldNL·0030
Plate 1 of 8. (c) Brittany Jackson, some rights reserved (CC BY-NC), uploaded by Brittany Jackson · via iNaturalist

Herbarium of the Nature Library

Name
Calendula officinalis
Family
Asteraceae
Native to
Known only in cultivation; probably derived from Mediterranean Calendula species. Grown worldwide
Habitat
Gardens, Disturbed ground
IUCN NE · Not evaluated

Pot marigold

Calendula officinalis

Also calledRingelblume (German) · Caléndula / Maravilla (Spanish) · Souci officinal (French) · Jīnzhǎn huā 金盏花 (Chinese) · Gul-e-ashrafi (Urdu/Persian)

A cheerful orange-and-gold daisy of cottage gardens whose resinous petals colour soups and soothe skin. It is not the Tagetes 'marigold' of Indian garlands, though the two are often confused.

Calendula officinalis, Mary's gold, common marigold, the pot marigold, Scotch marigold, or ruddles, is a flowering plant in the daisy family, Asteraceae. It is probably native to southern Europe, but its long history of cultivation makes its precise origin unknown, and it is widely naturalised. The florets are edible and the plant has historically been used as medicine. Wikipedia

§1

What it can do

  1. iPetals contain carotenoids (lutein, lycopene) that dye food and fabric yellow-orange
  2. iiTriterpenoid faradiol esters show anti-inflammatory activity on skin
  3. iiiOne plant bears several very different seed shapes (heterocarpy), spreading its bets on dispersal
  4. ivFlowers open in sunshine and close in dull weather
§2

At the table

Edible
Edible with care
Not eaten
Toxic
Deadly

Eatenpetals · young leaves

Petals colour rice, cheese and butter and garnish salads. Do not confuse it with Tagetes marigolds or the poisonous marsh marigold (Caltha). People allergic to Asteraceae may react.

§3

In the medicine cabinet

TraditionUse
European folk medicineOintments and infused oils for cuts, burns, nappy rash and sore nipples; petal tea for digestion and menstrual pain
UnaniFlowers used as a resolvent for swellings and for liver and menstrual complaints
Modern phytotherapyTopical creams studied for radiation dermatitis, leg ulcers and episiotomy healing; EMA traditional-use monograph for minor skin inflammation

Weight of evidence

Moderate. Some clinical trials with promising but limited or mixed results.

Active compounds

faradiol monoesters, triterpenoid saponins (calendulosides), lutein, β-carotene, isorhamnetin glycosides

CautionAsteraceae allergy and contact dermatitis. Trials for radiation dermatitis are conflicting. Avoid medicinal oral doses in pregnancy.
§4

Fruit & seed

Fruit: 190909 034 Chicago Botanic Gdn - Fruit Veg Island, Calendula officinalis 'Indian Prince' Pot Marigold (48861610016)Fruit: 190909 033 Chicago Botanic Gdn - Fruit Veg Island, Calendula officinalis 'Indian Prince' Pot Marigold (48861609581)Fruit: 190909 030 Chicago Botanic Gdn - Fruit Veg Island, Pennisetum glaucum 'Jester' Pearl Millet, Calendula officinalis 'Indian Prince' Pot Marigold, Brassica oleracea var sabellica Curly Kale (48861080493)

Fruit

Cypsela (achene)

Ripens: Summer–autumn

Curved, hooked and ridged achenes of several shapes on the same head.

Seed

1–2.5 cm

C-shaped, knobbly, beige-brown seeds of several forms

Dispersal
Hooked forms catch on fur; others fall or blow
Germination
Easy; 5–14 days at 15–21 °C; cover with 1 cm soil (needs darkness)

Photographs from Wikimedia Commons under open licences; hover for the photographer, click for the file.

§5

How to grow it

Hardiness (USDA zones)

1
2
3
4
5
6
7
8
9
10
11
12
13

Hardy annual; grown in USDA 2–11. Survives winters down to about -46 °C.

Light
Full sun
Water
Moderate
Soil
Any well-drained soil
Propagation
Seed
To harvest
Flowers 6–8 weeks from sowing
Climates
Temperate, Mediterranean, Subtropical (cool season)
  1. 1Sow directly 1 cm deep in spring or autumn
  2. 2Thin to 25–30 cm
  3. 3Pick flowers every few days to keep new ones coming
  4. 4Dry petals in shade for tea, oils or colouring

Can it grow where you are?

or
§6

Where it lives

Recorded sightings

—

geo-referenced records in GBIF, from museums, herbaria and field observers.

Native range

Known only in cultivation; probably derived from Mediterranean Calendula species. Grown worldwide

Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.

§7

In the old herbals & bestiaries

Woodcuts and engravings matched from the Source Library’s scanned books by name. Plates marked “relative” show a close kin rather than this exact species. Click a plate to read the page it came from, with translation.

§8

In the stacks

Searching the stacks…

Every page naming Calendula officinalis in the Biodiversity Heritage Library →

§9

Marginalia

Nicholas Culpeper's Complete Herbal (1653) prized marigold flowers for 'comforting the heart'. Medieval cooks used the petals as a cheap stand-in for saffron.

Curiosity

Its name comes from the Latin calendae, the first day of the month, because in mild climates it seemed to be in flower at the start of every month.

§10

Kinship

  1. kingdomPlantae
  2. ›phylumTracheophyta
  3. ›subphylumAngiospermae
  4. ›classMagnoliopsida
  5. ›orderAsterales
  6. ›familyAsteraceae
  7. ›subfamilyAsteroideae
  8. ›tribeCalenduleae
  9. ›genusCalendula
Open its branch on the Wheel of Life →

Photographs: iNaturalist contributors under the licences shown. Records: GBIF.org. Historical plates: Source Library (CC BY-SA 4.0; originals public domain). Summary text: Nature Library editors and Wikipedia (CC BY-SA). Medicinal and edibility notes are historical and educational, not advice. iNaturalist taxon 75931.