Preparing Seeds for a Swap

How to Clean and Package Harvested Seeds for a Seed Swap

Whether you’re participating in a community seed swap or trading with friends, properly cleaned and packaged seeds ensure better germination and happier gardeners.

Follow these beginner-friendly steps to clean, dry, label, and package your seeds.

1. Gather Your Materials

• Harvested seeds (e.g., tomato, bean, lettuce)

• Fine mesh sieve or screen

• Paper plates or trays

• Paper envelopes or small paper seed packets (ideal size: 3" × 4")

• Permanent marker or printed labels

  
  

2. Cleaning Your Seeds

1. Remove pulp or debris:

   • For fleshy fruits (tomatoes, peppers): Scoop seeds and pulp into a jar of water.

   • Gently swirl; viable seeds sink, debris and flat seeds float.

   • Pour off floating material, then drain seeds in a fine mesh sieve.

2. Rinse:

   • Rinse seeds under cool running water to remove any remaining pulp.

3. Drying:

   • Spread seeds in a single layer on a paper plate or tray.

   • Let air-dry in a cool, well-ventilated spot out of direct sunlight for 1–2 weeks.

   • Stir seeds daily to prevent clumping and mold.

     
     

     

     Seeds that have not been cleaned and packaged properly.

   

   Seeds that have not been sorted.

   

   Sorted seeds.

   
   

3. Preparing Packages

1. Choose packaging:

   • Use sturdy paper envelopes or commercially available seed packets (3" × 4").

     I recommend these options:

     https://www.amazon.ca/dp/B0D9NP4RLK?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 or these https://www.amazon.ca/gp/product/B0D6B5JLTK/ref=ewc_pr_img_1?smid=ANB78XOI3B2MN&th=1

   • I have also included seed packets you can download and print out on sturdy paper. You will find this in the resource section of the website.

     
     

     

     Labelled seed packages

4. Labeling Your Seed Packets

Include as much information as possible. However, if you don't have all the information listed

Common Name, Variety, Harvest Date & Location are a must!

Information	Why It Matters
Common name	So gardeners know what they’re planting
Botanical name	Ensures accurate identification
Variety	Highlights unique traits (e.g., “Cherry Belle” radish)
Harvest date	Indicates seed freshness
Origin/location	Adds provenance (e.g., “Richmond Hill garden”)
Days to germination	Helps gardeners plan
Special notes	Any tips (e.g., “soak 4 hours before planting”)

Use a permanent marker or print labels on adhesive paper for a neat look.

5. Sealing and Storing

1. Seal packets: If they are not self-seal envelopes, fold the envelope flap down neatly; secure with a sticker or a small piece of tape.

2. Store: Keep packets in a cool, dark, dry place (e.g., a drawer or sealed box) until the seed swap.

   
   
   
   

By following these steps, you’ll ensure your seeds will be approved at the seed swap —ready for planting and sharing the joy of gardening!