Calendula Officinalis

Calendula officinalis


Annual. Easy to cultivate in full sun and medium, somewhat fertile soils with good drainage. In the St. Louis area’s hot summers, plants benefit from partial afternoon shade, but they get leggy if they receive too much shade. Plant seeds either indoors (around 6-8 weeks before the last frost date) or outdoors (just before the last frost date). Plant your seedlings or newly purchased starting plants when the danger of frost has passed. Pinch back young plants to promote dense bushy growth. Flowers will bloom longer if spent stems are removed. Plants that start to wilt in the heat of summer should be pruned back in order to encourage flowering in the fall. In the sweltering heat of a St. Louis summer, it’s not uncommon for plants to die before the season ends. Potential garden reseeding plant.

Distinctive Features

Pot marigold, or Calendula officinalis, is a popular annual that blooms from late summer into early October in temperate regions. Its bright yellow to deep orange petals resemble daisies or chrysanthemums. Many pastel tones and even some bicolors are now available as a result of cultivars. Blossoms can be single or double, with a diameter of 3 to 4 inches. This species was widely grown in Shakespeare’s time as an Old World herb and ornamental. It reaches a maximum height of 1 to 2 feet and spreads to the same extent. Even though the blossoms and leaves have a little bitter flavour, they are nevertheless edible and can be used to add colour and flavour to foods such as soups, salads, and rice. Lance-shaped to oblong-obovate (and up to 6 inches long) aromatic green leaves.

The Latin term calendae, which means “first of the month,” is the source of this genus’s name.

Merchandisable specific epithet. Typically used to describe plants that have been deemed to offer therapeutic benefits.


There aren’t any major pest or disease issues. Powdery mildew susceptible. Snails and slugs can be a real problem, especially for young plants. Sometimes you’ll get aphids or whiteflies.

This common flower, known as Calendula officinalis, is simple to grow in sunny areas and adapts to a wide range of soil conditions. Despite being a perennial plant, it is typically only given one growing season because it cannot withstand the harsh winters or the oppressive heat of some climates.

Flower officinale marigold seed

Because they thrive in a wide variety of soils, calendulas are widely regarded as some of the simplest and most adaptable garden flowers to cultivate. Typically, seeds are planted in the spring in temperate regions so that flowers can be enjoyed all summer and into the fall. The seeds for winter blooms are planted in the fall in regions where the ground doesn’t freeze solidly. In the subtropical heat, plants will dry up and die. A sunny or partially sunny site is sufficient for seed germination, but plants will thrive in full light and a nutrient-rich, well-drained soil. Marigolds grown from seed often produce beautiful yellow, gold, and orange flowers in less than two months.

The leaves are simple, range in length from 5 centimetres to 7 inches, and are grouped in a spiral pattern. The ray florets and disc florets of the flower heads are a pale yellow to a deep orange, and the flower heads are 3-7 cm (1+14-2+34 in) in diameter. The majority of cultivars can be recognised by their pungent scent. Regular deadheading (removal of spent flower heads) can help plants produce flowers more consistently.