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How to Germinate Nasturtium Seeds

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How to Germinate Nasturtium Seeds

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Overview

Nasturtiums provide brilliant color and emit a delicate spicy fragrance making them a popular plant for sunny gardens. Available in both climbing and dwarf varieties, the scalloped foliage adds depth and dimension to planters and hanging baskets. Added to window boxes, nasturtiums provide a splash of color that brightens the entire box. These easy-to-grow plants germinate quickly when planted under ideal conditions. Plant nasturtiums in the spring after the danger of frost has passed in your area and the soil has warmed.

Step 1

Soak nasturtium seeds overnight in a bowl of lukewarm water to speed the germination process. Drain any excess water from the bowl and plant the seeds immediately.

Step 2

Sow nasturtium seeds to a depth of ½ inch and firm the soil down with your hands. Nasturtiums require darkness to germinate. Planting too shallowly inhibits germination.

Step 3

Water to moisten the soil to a depth of 3 to 4 inches and keep the soil moist until the seeds germinate in 7 to 14 days.

Tips and Warnings

  • Water only when the soil dries, as nasturtiums prefer dry soil.

Things You'll Need

  • Bowl
  • Trowel
  • Watering can or hose

References

  • University of Wisconsin Extension: Nasturtium
  • University of Vermont Extension: Nasturtium; A Favorite Old-Fashioned Flower
  • Ohio State University Extension: Edible Landscaping

Who Can Help

  • University of Florida IFAS Extension: Garden Nasturtium
Keywords: germinate nasturtiums, grow nasturtiums, plant nasturtiums

About this Author

Nannette Richford is an avid gardener, teacher and nature enthusiast with 4 years experience in online writing and a lifetime of personal journals. She is published on various sites, including Associated Content. Richford holds a Bachelor of Science in secondary education from the University of Maine Orono and certifications in 7-12 English, K-8 General Elementary and Birth to age 5.