How to Make Your Own Seed Starting Mix, Quick and Easy

A quick DIY guide on how to make seed starting mix at home. Organic seed starting media using coco coir that works best for seed germination and seedling success.

Creating your own seed starting mix is a cost-effective and straightforward process. Here’s how to make your own seed starting mix quickly and easily:

Materials You’ll Need:

  • Peat moss or coconut coir
  • Perlite or vermiculite
  • Compost or well-rotted manure (optional)
  • Large container or mixing tray
  • Trowel or scoop
  • Water

Steps to Make Your Seed Starting Mix:

  1. Prepare Your Workspace:
    • Find a clean, flat surface or a large container where you can mix your seed starting mix. This can be done indoors or outdoors, but it’s a good idea to have good ventilation.
  2. Measure Your Ingredients:
    • Determine the volume of seed starting mix you need based on the number of containers you plan to fill. You can use equal parts of the following ingredients as a starting point:
      • Peat moss or coconut coir
      • Perlite or vermiculite
      • Compost or well-rotted manure (optional)
  3. Mix the Ingredients:
    • Begin by pouring the measured peat moss or coconut coir into your container or mixing tray. If using compost or manure, add it to the mix. Compost adds nutrients that can benefit seedlings. Mix the components together thoroughly, breaking up any clumps as you go.
  4. Incorporate Perlite or Vermiculite:
    • Next, add perlite or vermiculite to the mix. These materials help improve aeration and drainage. The amount you add depends on your preference but typically ranges from 10% to 30% of the total mix. Mix well.
  5. Moisten the Mix:
    • Gradually add water to the mix while continuing to blend the components. The goal is to achieve a uniform moisture level throughout the mix, ensuring it’s damp but not waterlogged. The mix should be able to hold its shape when squeezed but not drip water.
  6. Test the Mix:
    • Fill a few seedling containers or pots with your homemade seed starting mix. Plant some seeds in them to ensure the mix works well for your specific needs.
  7. Use Your Seed Starting Mix:
    • Fill your seedling trays, pots, or other containers with the mix, plant your seeds according to the recommended depth and spacing, and water the seeds lightly.
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Making your own seed starting mix not only saves money but also allows you to tailor the mix to the specific needs of your plants. By following these easy steps, you can create a high-quality mix that provides the ideal environment for your seeds to germinate and grow into healthy seedlings.


  • James Jones

    Meet James Jones, a passionate gardening writer whose words bloom with the wisdom of an experienced horticulturist. With a deep-rooted love for all things green, James has dedicated his life to sharing the art and science of gardening with the world. James's words have found their way into countless publications, and his gardening insights have inspired a new generation of green thumbs. His commitment to sustainability and environmental stewardship shines through in every article he crafts.

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