How to Grow Marigolds from Seed
Marigolds sprout in 5–7 days and bloom in 50–60 days. They’re the easiest flower for beginners and repel some garden pests.
Marigolds bloom from summer to frost. They’re almost impossible to fail.
Step-by-Step
1. Sow 1/4 inch deep. 5-7 days to germinate.
2. Spacing. 8-10 inches.
3. Sun. 6 hours.
4. Water. When top inch is dry.
5. Deadhead. Pinch off spent flowers for more blooms.
6. Don’t over-fertilize. Too much nitrogen = leaves, no flowers.
Types
| Type | Height | Flower | Notes |
|---|---|---|---|
| French | 12-18 in | 2 in | Most common |
| African | 2-3 ft | 3-4 in | Large blooms |
| Signet | 6-12 in | 1 in | Edible |
| Triploid | 12-18 in | 2-3 in | Sterile |
Common Questions
Are marigolds edible? Signet varieties are. Others taste bad.
Do they really repel pests? Some. Nematodes and aphids especially.
Do they come back every year? Annual. But they self-seed.
How do I deadhead? Pinch off spent flowers.
Can I grow them in containers? Yes. French varieties work best.
Why are they turning brown? Spider mites or powdery mildew.