Best Practices for Capturing and Storing Arborvitae Seeds

by

Arborvitae trees are popular for their lush foliage and privacy screening. Collecting and storing their seeds properly ensures successful propagation for future planting. This guide covers the best practices to capture and store arborvitae seeds effectively.

Understanding Arborvitae Seeds

Arborvitae (Thuja spp.) produce small, cone-like structures that contain the seeds. Typically, seeds mature in late summer to early fall. Recognizing the right time to harvest is crucial for seed viability.

When and How to Collect Seeds

The best time to collect arborvitae seeds is when the cones have turned brown and are beginning to open. Follow these steps for effective collection:

  • Wait until the cones are fully mature and brown.
  • Gently shake or tap the cones to release the seeds.
  • Collect the seeds in a clean container or paper bag.
  • Remove any debris or cone fragments from the seeds.

Preparing Seeds for Storage

Proper preparation ensures seed longevity and viability. Follow these steps:

  • Allow the seeds to dry completely in a well-ventilated area.
  • Remove any remaining cone material or chaff.
  • Sort seeds by size and quality, discarding damaged ones.

Storing Arborvitae Seeds

Correct storage conditions are vital for maintaining seed viability over time. Consider the following best practices:

  • Use airtight containers such as glass jars or plastic containers with tight-fitting lids.
  • Label containers with the collection date and seed type.
  • Store seeds in a cool, dark, and dry environment, ideally between 32°F and 41°F (0°C to 5°C).
  • Avoid exposure to moisture, heat, or direct sunlight.

Maintaining Seed Viability

To maximize germination success, periodically check stored seeds for signs of mold or deterioration. If seeds show signs of damage or have been stored for more than two years, consider re-collecting fresh seeds.

Additional Tips for Successful Seed Propagation

Besides proper collection and storage, ensure optimal conditions for germination:

  • Stratify seeds by chilling them in the refrigerator for 30-60 days before planting.
  • Use well-draining soil and maintain consistent moisture.
  • Plant seeds at a depth of about ¼ inch (6 mm).
  • Provide adequate sunlight and protection from harsh weather.

By following these best practices, gardeners and educators can ensure healthy growth and successful propagation of arborvitae trees from seed.