How to Plant Marigolds
- French marigolds can easily be started from seed, while African marigolds are best purchased as young plants (when started from seed, they can take a long time to flower).
- Optional: If soil is nutrient-starved, add some slow-release (granular) fertilizer in the planting hole. A 5-10-5 works fine.
- Moisten the soil, then sow seeds 1 inch apart and no more than 1 inch deep.
- While still small, thin the seedlings. Space French and signet types 8 to 10 inches apart. The larger African marigolds should be at least 10 to 12 inches apart.
- If planting transplants, thoroughly water each plant after planting in the garden.
- If planting in containers, use a soil-based potting mix. Either mix in slow-acting granular fertilizer at planting time or plan to water with diluted liquid fertilizer periodically. Take care to space properly; marigolds grown in containers can become crowded.
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