Calendula officinalis

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Calendula officinalis L.

Asteraceae

Life form: annual or biennial
Usage: ornamental plant

Exposure: sun   6

Moisture: moderately moist

Soil: gritty-sandy - Soil: sandy loam - Soil: gritty loam - Soil: sandy clay

Arrangement: alternate
Leaves: decidious

Shape: oblanceolate

Division: simple

Shape: many-stellate
Fruit: achene

5B / fbd923 

Inflorescence: solitary

Petals: single
Habit: erect

Growth form: erect

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Rosopsida
Subclassis:
Asteridae
Superordo:
Asteranae
Ordo:
Asterales

Calendula officinalis belongs to the group of annual and biennial plants.

Naming

Calendula officinalis was described by Carl Linnaeus in 1753. The name is considered as validly published.

Taxonomy

Calendula officinalis is the type species of the genus Calendula which contains approximately 16 to 44 species and belongs to the family of the Asteraceae (Aster Family).

Characteristics

Calendula officinalis - habitus
Calendula officinalis - flowers
Calendula officinalis - fruits

Growth

The plants reach heights of 30 to 70 centimetres.

Leaves

Calendula officinalis is deciduous. The simple leaves are alternate. They are oblanceolate, entire and sessile.

Flowers and Fruits

Calendula officinalis produces solitary erect, lemon-yellow many-stellate flowers from June to October.

The plants produce achenes.

Root System

Distribution

Calendula officinalis is native to Southern Europe.

Cultivation

The plants prefer a sunny situation on moderately moist soil. The substrate should be gritty-sandy, sandy-loamy, gritty-loamy or sandy clay soil. They tolerate temperatures down to -23°C (USDA zone 6).

Uses

Suited for cottage gardens, as well as suited as bee pasture.

Maintenance and Propagation

The plants usually require only a moderate amount of maintenance.


Cultivars

Pests and Diseases

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
  • Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.

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