Marigold is propagated by seeds as it germinates simply and produces vigorous plants. The marigold seeds count about 300 – 350/gram. The seeds remain viable for about 1 to 2 years. The germination of fresh seeds is about 90 to 95%. The seeds germinate well at a temperature range from 18-30°C.
Begin Marigold seeds in a seed-starting flat that’s filled up until 3/4 inch from the top with sterile, moist, seed-starting mix. Sprinkle the seeds on top of the medium and sow them at a depth that equals 2 to 4 times the diameter of the seeds. Spray the soil surface with water carefully to moisten it, and then place the tray in a plastic bag or cover it with plastic wrap and this will promote soil-moisture retention.
