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Even though Calendula Officinalis can tolerate light shade in warmer regions, these plants still prefer full sunlight. The best way to plant Calendulas is in well-prepared garden beds or large containers filled with organic soil. Before planting the seeds, mix well-aged manure or compost with the soil to improve the soil conditions.Maintain a distance of 2.5 to 4 inches of space between the seeds. If you are starting earlier than the standard Calendula planting season, then start your plants indoors under grow lights at least 6 to 8 weeks before the last frost. However, it is advisable to directly sow the seeds in the garden after the last frost. Calendula Officinalis seeds germinate within 5 to 15 days.