Calendula cultivation

How to grow calendula

Plant characteristics

– Plant family: Compositae.

Annual or sometimes biennial plant, erect stems up to 40 – 70cm. tall.

Leaves alternate, petiolate, oblong, spatulate, margins entire or with few teeth, and hairy.

– Large floral florets, 5 – 7cm. in diameter, composed of radiated flowers. It blooms from June to early November.

Fruit thorny and curved, achene, lacking pappus.

Calendula climate

– Plant of temperate climates.

– Resistant to frost and drought.

– It grows in full sun or semi-shade.

– Located from 0 to 1,000 m.

Pot marigold flowers

Calendula soil

  • Type of soil: sandy loam soils, limestoneor clay.
  • It requires moist soil, even in summer.
  • pH between 4.5 and 8.3. It can grow in acid and alkaline soils, but it prefers limestone.
  • Provide a fertile soil rich in organic matter.
Calendula plant
Photo of calendula plant

Calendula reproduction


– Plant seeds in situ, in spring (March-April) or early fall (September-October).

– Germination occurs in 2-4 weeks.

– Flowering occurs four months after planting, in summer (if planted in spring) or between May and June if planted in autumn.

– The plant reproduces spontaneously.

Calendula flowering

– Flowers appear 4 weeks after sowing. Usually between April and October.

Calendula diseases and pests

  • Mosaic Disease: caused by mosaic virus.
  • Mildew: fungal disease that attacks in full force in summer, but that may appear in late spring.
  • Powdery mildew: It is a common disease of plants. It appears in spring but its effects may linger during the summer or fall.

punto rojo More information on calendula.

This article was endorsed by Julián Masats - Technical agricultural engineer specialized in horticulture and gardening.
Written by Editorial Botanical-online team in charge of content writing

25 September, 2021

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