Seed Starter Mix

"All of my seedlings are coming up great in this mix. So far I've had no issues with damping off or fungus gnats. I purchased a second bag because I liked this stuff so much." -Lindsay L

Start your Seeds off Strong!

Seed Starter Mix provides everything you need to start seeds, with enough fertility for up to 45 days. This blend promotes healthy, vigorous seedlings with strong root systems that are able to withstand transplanting and thrive all season long. It also has great water retention characteristics, saving both time and water!

Best for:
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Use Recommendations

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If Growing in a Seed Starting Tray

  1. Moisten the Mix
    Add water until the mix holds its shape when squeezed, but doesn’t drip water.
  2. Fill Your Containers
    Fill flats, pots, or trays with the moistened mix. Gently shake to settle—do not compact.
  3. Plant Your Seeds
    Sow seeds and lightly cover with moistened mix at the depth recommended for each variety.
  4. Maintain Moisture
    Mist regularly to keep the surface evenly moist until germination. Water as needed after seedlings emerge.
  5. Transplant When Ready
    Move seedlings to individual containers as needed. Avoid transplanting into pots larger than 2" at this stage.

If Using a Soil Blocker

  1. Prepare the Mix
    Blend one part warm water with three parts mix until it reaches a peanut butter–like consistency.
  2. Create a Mound
    On a firm surface, form a mound of mix about 1¼–1½ times deeper than the height of the soil blocker.
  3. Form the Blocks
    Press the blocker firmly into the mix, twist slightly, and lift.
  4. Release the Blocks
    When properly moistened, the mix will hold its shape and release easily onto a tray or growing surface.
  5. Reset the Blocker
    Rinse with warm water between sets for clean, consistent blocks.
  6. Sow Seeds
    Place a seed in the indentation of each block and cover according to the seed packet instructions.
  7. Retain Moisture
    Cover with a clear dome to maintain humidity and prevent drying during germination.

Application Opportunities

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More Benefits of Using Seed Starter Mix:

Increased germination

Good seedling vigor

Sturdy seedlings at transplanting

Save money with less watering and fertility inputs

More effective cultivation due to compact, healthy upright plants

Crafted on our computerized blending line for consistent media every time

Ingredients

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Purple Cow Compost

Sphagnum Peat Moss

Perlite

Vermiculite

Rock Minerals/Sea Minerals

OMRI Certificate

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Be Part of the MOOVEMENT

Together, we can close the loop by transforming green waste material into living soil for results that are Both remarkable and good for the environment.

OMRI listed certification logo

Grow with Purple Cow Organics bringing life back to the soil, supporting the environment, and building healthier communities.

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Healthy communities start with healthy soil.
18 million

pounds of recycled green material per year

Diverting waste from landfills and returning it to the soil.

1.6 Billion

Leaves per year used

Or the weight of over 9000 cows!

4,000

tons of carbon sequestered each year

Offsetting emissions equal to over 1000 cars each year.