How to Sow Nasturtium Seeds

Indoor Sowing

• 1

  Set 3-inch diameter peat pots in a tray. Fill the pots with potting soil to within 1 inch of the rim.

• 2

  Sow one seed per peat pot, placing the seed on the soil surface. Cover with a ½ to 1 inch layer of potting soil.

• 3

  Water the soil until the excess moisture drains out of the pots and into the tray. Leave the pots in the standing water for two hours so the soil absorbs the moisture, then drain the excess water from the tray.

• 4

  Cover the pots with a plastic bag so that the moisture is retained in the soil. Place the pots in a warm room to germinate.

• 5

  Remove the plastic bag once sprouts emerge. Move the pots to a warm, sunny window and water when the soil begins to dry.

Outdoor Sowing

• 6

  Lay 1 inch of compost over a sunny, well-drained garden bed. Work the compost into the top 6 inches of soil and water the bed until the soil is moist to a 6-inch depth.

• 7

  Plant the nasturtium seeds ½ to 1 inch deep. Space the seeds 2 to 3 inches apart in all directions.

• 8

  Mist the seed bed with water if the soil surface begins to dry during germination. Maintain the soil moisture to a 6-inch depth. Seedlings emerge within seven to 14 days.