Tagetes patula - Seeds

Height: 4 to 85 inches (10 to 220 cm).
Growing Region: Zones 1 to 10.
Flowers: Summer until first frost.
Flower Details: Orange Red. Daisy-like ray and disc florets.
Foliage: Pinnate. Toothed.

Sow Outdoors: Cover seed. A couple of weeks before the last frost. Spacing 6 to 30 inches (15 to 75 cm).

Sow Indoors: Vermiculite. Water from below. Germination time: three days to two weeks. Temperature 70°F (21°C). Seven or eight weeks before expected last frost. Transplant outdoors following the last frost.

Requirements: Full sunlight or afternoon shade in hot areas. Soil pH 6 to 7. Organic soil. Can survive in dry soils. Monthly feed. Regular watering. Pinch tips. Deadhead.

How to grow:
The seeds of Marigolds (Tagetes) should be sown outdoors a couple of weeks before the last frost of spring, marigold seeds should be lightly covered once sown. When planting Marigolds they should ideally be grown in a sunny area of the garden that receives shade in the afternoon. The soil that Marigolds grow in should be organically enhanced and of pH 6 to 7. 
If starting off indoors, then sow the seeds of marigolds about 7 weeks before the last expected frost of spring; they should be transplanted outdoors following the last frost. Germination of marigold takes from three days to two weeks and should be done at about 20 to 24 degrees centigrade. It is important to water the young marigold seedlings from below. When putting out into the garden space small marigold varieties about 15cm apart; medium species 30cm apart and large marigolds from 45 to 60cm apart.