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Yarrow Plant Seeds:
Guide to Storing, Sowing and Germination

Updated: July 2, 2023

Introduction

Yarrow (Achillea millefolium) is a versatile and resilient perennial plant that is highly valued for its medicinal properties and ornamental beauty. Growing yarrow from seeds is an economical and rewarding way to add this lovely plant to your garden. In this article, we will provide a comprehensive guide on storing, sowing, and germinating yarrow plant seeds.

Storing Yarrow Plant Seeds

Properly storing yarrow plant seeds is essential to maintain their viability. Here are some steps you can follow:

  1. Harvesting: Yarrow seeds are typically ready for harvesting when the flowers have faded and the seed heads have turned brown. Cut the seed heads with scissors or pruning shears, leaving a few inches of stem attached.

  2. Drying: Place the seed heads in a paper bag or envelope and keep them in a dry, well-ventilated area. It is important to avoid exposing the seeds to direct sunlight or excessive moisture during the drying process. Allow the seed heads to dry for about two weeks or until they become brittle.

  3. Cleaning: Once the seed heads are dry, gently rub them between your hands or use a sieve to separate the seeds from the chaff. Discard any damaged or discolored seeds.

  4. Storage: Store the cleaned yarrow seeds in a cool, dark place such as an airtight container or a resealable plastic bag. Adding a desiccant packet can help absorb any excess moisture and prolong the shelf life of the seeds. Make sure to label the container with the date of harvest and variety of yarrow.

By following these steps, you can store yarrow plant seeds for up to three years without significant loss in germination rates.

Sowing Yarrow Plant Seeds

Sowing yarrow plant seeds is a straightforward process that can be done both indoors and outdoors. Here’s how you can sow yarrow seeds:

  1. Indoor Sowing: Start indoors about six to eight weeks before the last frost date in your area. Fill seed trays or small pots with a well-draining seed starting mix. Moisten the soil before sowing the seeds.

  2. Seed Placement: Place yarrow seeds on the soil surface, spacing them about 1 inch apart. Lightly press the seeds into the soil, but do not cover them as yarrow seeds require light to germinate.

  3. Watering: Use a fine mist sprayer or bottom watering method to water the seeds gently. Avoid overwatering, as excessive moisture can lead to rotting or fungal diseases. Keep the soil consistently moist but not soggy throughout the germination period.

  4. Temperature and Light: Yarrow seeds prefer temperatures between 60°F and 70°F (15°C – 21°C) for germination. Place the seed trays in a warm location with indirect sunlight or under grow lights for about two weeks.

  5. Transplanting: Once the seedlings have developed two to three sets of true leaves, they can be transplanted into larger containers or directly into the garden. Harden off the seedlings by gradually exposing them to outdoor conditions before transplanting.

Germinating Yarrow Plant Seeds

Germinating yarrow plant seeds requires patience and proper care. Here are some tips to ensure successful germination:

  1. Stratification: Some yarrow varieties benefit from cold stratification to break seed dormancy and enhance germination rates. To stratify yarrow seeds, place them in a moist paper towel or sealable plastic bag and refrigerate for four to six weeks before sowing.

  2. Scarification: Yarrow seeds have tough outer coats that can inhibit germination. Scarifying the seeds by rubbing them gently with sandpaper or nicking them with a knife can help improve germination rates.

  3. Germination Time: Yarrow seeds typically germinate within 14 to 21 days, although some varieties may take longer. Be patient and maintain consistent moisture levels during this period.

  4. Thin Seedlings: Once the seedlings have emerged, thin them out to prevent overcrowding. Space the strongest seedlings about 12 to 18 inches apart to allow for proper growth and air circulation.

By following these guidelines, you can ensure successful germination of yarrow plant seeds and enjoy a bountiful garden filled with these beautiful and beneficial plants.

Conclusion

Growing yarrow from seeds is a rewarding experience that allows you to appreciate the beauty and medicinal properties of this versatile plant. By properly storing, sowing, and germinating yarrow seeds, you can enjoy a thriving yarrow garden for years to come. So go ahead, gather those seeds, and embark on your yarrow-growing journey!