Marigolds require approximately 45 to 50 days to flower after seeding,
therefore seeding indoors should be done in late March or early April. The
plants should be ready for planting outdoors after the danger of frost has
passed, about May 15.
- Seed may be planted in seedbeds, coldframes, flats, clay pots, or peat pots.
- Pulverize the soil. Place the seed on the surface or in furrows and cover
with 1/4 inch of perlite or vermiculite.
- Keep the soil moist and warm. The seed will germinate within a few days.
- When true leaves appear, the individual plants may be transplanted into
individual 3-inch containers. Shade for a few days until the plants become
- Give the plants full sun.
- Plants will be ready to plant in the garden after the danger of frost has
passed. Marigolds may be seeded directly into the garden after the danger of
frost has passed. Follow the directions above as to preparing soil and seed
depth. Seedlings may be thinned if necessary.
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