Answer: Calendula officinalis is a cool-season annual, growing 15-18 inches in height; grows best in full sun; average, well-drained soil. These plants bloom in late spring-early summer.
The seeds take 10-14 days to germinate when sown 1/4 inch deep and kept at 70F degrees. They need dark to germinate and will take 6-8 weeks to reach transplant size. They can be planted outdoors after the last heavy spring frost. Space the seedlings 12 inches apart in your garden bed and keep them well watered during the growing season.
As long as they receive full exposure to sunshine and are watered adequately, they should bloom their little heads off.
Q&A Library Searching Tips