Annuals > Calendula > Calendula officinalis > Calendula officinalis
Calendula officinalis
Ruddles, Common Marigold, Scotch Marigold, Pot Marigold
Origin: Origin unknown.
| Family |
| Compositae |
| Genus |
| Calendula |
| Species |
| officinalis |
| Category |
| Annuals |
| USDA Hardiness Zone |
| 6 |
| Canadian Hardiness Zone |
| 5 - 6a |
| RHS Hardiness Zone |
| H7 - H6 |
| Temperature (°C) |
| -23 - (-18) |
| Temperature (°F) |
| -10 - 0 |
| Height |
| 70 cm |
Photographs
Cultivars
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Description and Growing Information
Flowering Period
| Landscape |
| Used in bedding, borders, window boxes, and children's gardens. |
| Cultivation |
| Grow in full sun in any well-drained soil. |
| Growth |
| Fast |
| Pests |
| No notable pests or diseases. |
| Leaf Description |
| Leaves to 17 x 6 cm, pubescent to sparsely woolly, and are occasionally toothed and wavy. |
| Flower Description |
| Capitula to 7 cm in diameter, with ray florets to 2 cm that are yellow or orange in colour. |
| Fruit Description |
| Fruit is to 2.5 cm, beaked or winged. |
| Notable Specimens |
| Royal Botanical Gardens, Burlington, Ontario, Canada planted as an annual. |
| Propagation |
| Sow in-situ in spring or autumn, or under glass in early spring. |
| Ethnobotanical Uses (Disclaimer) |
| Calendula has a long history of medicinal uses. The juice from the flowers was used by the Romans as a cure for warts, the Doctrine of Signatures states that was used it to treat jaundice and as a substitute for saffron in the treatment of measles and smallpox, as a styptic during the American Civil War, and as a haemostatic in World War 1. The petals are now used as a garnish for salads, in meat and fish soups, or as a colouring agent for cheese, butter, rice dishes and cakes. |
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