How to Grow Calendula in Containers

Calendulas, Calendula officinalis, are part of the Asteracea plant family and are more commonly known as pot marigold. Calendula is a short-lived herbaceous perennial or an annual in cold climates. Calendula seeds germinate readily and will thrive when grown in containers situated in a partly sunny location. Calendulas grow 1 to 2 feet tall and bloom in shades of bright yellow to deep orange. The florets of calendula often are used as an herb to flavor soups or stews. Extracts from calendula florets are used in lotions, soaps and teas.

Things You'll Need

• Container with drain holes
• Organic potting mixture
• Liquid fertilizer

Instructions

1. Choose a 2- to 3-gallon container that has one or more drainage holes and a drip tray. Each calendula plant will spread to about 1 foot wide at maturity.

2. Fill the container within 2 to 3 inches of the rim with organic potting soil. Water the soil thoroughly.

3. Press three to five shallow holes, not more than 1/4-inch deep, in the soil with your finger. Space the holes equal distances from each other.

4. Place one or two calendula seeds in each hole. Cover the seeds lightly with soil.

5. Water the seeds until they are saturated, then water regularly throughout the growing season. Calendulas like to grow in moist, but not soggy, soil.

6. Fertilize the calendula plants once or twice during the summer with a liquid or granular fertilizer, following the label directions.

7. Deadhead the calendula blossoms regularly to promote continuous blooming.

References

• Utah State University Cooperative Extension: Herb Container Gardens
• Plant Biology: Guide to Growing Garden Plants -- Calendula (Pot Marigold)
• Cornell University: Growing Vegetables, Herbs, and Annual Flowers in Containers
• University of Florida IFAS Extension: Calendula Officinalis Calendula, Pot Marigold

Resources

• Fine Gardening: Calendula Officinalis (Pot Marigold)
• MedlinePlus: Calendula