Contents
Description
Calendula, also known as pot marigold, is a herbaceous plant that belongs to the Asteraceae family. It is native to the Mediterranean region but is widely cultivated in gardens around the world for its bright orange and yellow petals that bloom from late spring to early fall. The plant grows up to 60 cm in height and has hairy stems and leaves. Calendula is known for its medicinal properties and is commonly used in herbal remedies to treat various ailments.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Asteraceae |
| Genus | Calendula |
Appearance
Calendula has bright orange and yellow petals that bloom from late spring to early fall. The petals are arranged in a daisy-like shape and have a slightly curved appearance. The plant grows up to 60 cm in height and has hairy stems and leaves. The leaves are green and oblong in shape, with a slightly serrated edge. The flower heads are approximately 5 cm in diameter and are held aloft on long stems. Calendula has a pleasant, slightly sweet fragrance.
Care Guide
Water
Calendula requires regular watering to thrive. It is important to keep the soil consistently moist but not waterlogged. Overwatering can lead to root rot, so it is important to allow the soil to dry out slightly between waterings.
Fertilization
Calendula does not require frequent fertilization but can benefit from a balanced fertilizer once a month during the growing season.
Soil
Calendula prefers well-draining soil that is rich in organic matter. It can tolerate a range of soil types but performs best in loamy, well-drained soil.
Sunlight
Calendula requires full sun to partial shade to thrive. It can tolerate some shade but will not bloom as prolifically in low light conditions.
Hardiness Zones
Calendula is hardy in USDA zones 8 to 10. It can be grown as an annual in cooler climates.
Common Pests & Diseases
Calendula is relatively resistant to pests and diseases but can be susceptible to powdery mildew, downy mildew, and root rot. Aphids and spider mites can also be a problem. Regularly inspecting the plants and removing any infected leaves or flowers can help prevent the spread of disease. Applying a fungicide or insecticide can also help control pests and diseases.
Habitat
Calendula is native to the Mediterranean region but is widely cultivated in gardens around the world. It prefers well-drained soil and full sun to partial shade. Calendula can be grown in containers or in the ground and is a popular choice for borders, rock gardens, and cottage gardens.
Question and Answer
Q: Can Calendula be grown indoors?
A: Yes, Calendula can be grown indoors as long as it receives adequate sunlight and is planted in well-draining soil.
Q: What are the medicinal properties of Calendula?
A: Calendula has anti-inflammatory, antibacterial, and antifungal properties and is commonly used in herbal remedies to treat skin irritations, wounds, and infections.
Q: How often should Calendula be fertilized?
A: Calendula does not require frequent fertilization but can benefit from a balanced fertilizer once a month during the growing season.
Q: Can Calendula tolerate shade?
A: Calendula can tolerate some shade but will not bloom as prolifically in low light conditions. It prefers full sun to partial shade.
Related Plants
– Chrysanthemum- Echinacea- Rudbeckia- Zinnia- Marigold
References
– “Calendula.” Missouri Botanical Garden. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=276130&isprofile=0&basic=Calendula#- “Calendula officinalis.” Royal Horticultural Society. https://www.rhs.org.uk/Plants/8919/Calendula-officinalis/Details- “Calendula.” The Old Farmer’s Almanac. https://www.almanac.com/plant/calendula
