How to Grow Coleus Seeds

Coleus are tropical, tender perennials that are grown as annuals in most parts of the United States. Grown for their colorful foliage, coleus are available in many varieties. They all can be started from seed. Sow the seeds indoors in late winter to have seedlings ready to set out in the garden after the first frost.

Things You'll Need

  • Seed trays or peat pots
  • Tray
  • Seeds
  • Seed-starting mix
  • Spray bottle
  • Heating mat (optional)
  • Spray bottle

Instructions

    • 1

      Order seeds from an online nursery or buy packets at your local garden center.

    • 2

      Place the seed trays or peat pots on a tray. Fill them with seed-starting mix to within a quarter inch of the top of the container. Moisten the mix with warm water.

    • 3

      Sow three or four seeds in each seed pot. Don't overlap them. They should be spaced evenly in the pot.

    • 4

      Sprinkle a thin layer of seed-starting mix on top of the seeds -- just enough to cover them.

    • 5

      Use a spray bottle to moisten the soil covering the seeds so they can start germinating. Place the seed trays in a sunny window that receives at least six hours of sun a day or supply an artificial light source.

    • 6

      Place a heating mat under the tray if you cannot keep the room temperature at 70 degrees Fahrenheit.

    • 7

      Keep the soil moist while the seeds are germinating by using the spray bottle daily to wet the soil. Once you see seedlings, water from the bottom. Pinch the weakest seedlings from each pot to allow only the strongest to grow.

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