How to Grow Double Marigold Seed

The marigold, a favorite annual garden flower, has dozens of varieties, with more being introduced each year. Most of the better-known marigold species have double or pom-pom flowers; there's only one single-flowered species. However, you grow all marigold species the same way. The colorful faces of these flowering plants brighten up gardens during the summer heat when most plants wilt and fold. They love the sun but will also flower in semi-shady locations. Easily started from seed sown indoors in March or April, these flowers seem to be the one bloom summer gardens cannot do without.

Things You'll Need

• Seed tray or starter packs
• Seed starter mix or fine-textured potting soil
• Fertilizer

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Instructions

1. • 1

     Fill trays or starter packs with your chosen potting mix. Place marigold seeds onto the surface and cover with 1/4 inch of potting mix.

   • 2

     Keep seeds evenly moist until they sprout in approximately seven to 10 days. Fertilize with a 1/4-strength solution of balanced liquid fertilizer until seedlings have three sets of true leaves.

   • 3

     Fertilize with half-strength liquid fertilizer until all danger of frost has passed. Transplant seedlings into a loamy garden soil at a spacing recommended on the seed pack. Plant spacing varies with different varieties.