A peat-free organic soil conditioner and amendment

A revolutionary organic soil conditioner and amendment made from upcycled, organic paper fibers. Prime is OMRI listed for organic growing and is the best soil for sustainably minded, and organic gardeners. This growing media is lightweight, and significantly less dusty than traditional soil mediums. Prime is also the cleanest, most consistent soil on the market, with no pathogens, weed seeds or other heavy metals and harmful ingredients and every batch is tested to ensure quality and optimal performance. PittMoss Prime is a soilless growing substrate that also requires significantly less water and applied fertilizer because of its ability to retain and better manage applied resources, evenly distributing them throughout the porous particles to be more available to the plant’s roots. PittMoss Prime is the best soil conditioner with high amounts of readily available carbon, perfect for creating a living soil environment that is chalk-full of soil biology! Prime is a wonderful and eco-friendly soil amendment that replaces sphagnum peat moss, perlite and vermiculite for gardeners looking to blend their own mix, or to improve soil conditions. PittMoss Prime is a great option for improving and establishing lawns, planting trees and shrubs, and replacing peat in potting soil blends. When used as a peat substitute for potting soils, PittMoss recommends using at least 30% – 50% Prime with a blend of compost and other amendments.

How it’s Made: Prime is made from PittMoss’s proprietary and revolutionary recycled paper fiber. PittMoss engineers this fiber to have incredible properties that allows plants to grow big and strong, even under stressful conditions. This revolutionary product is the most sustainable and high-performing growing media on the market made 100% in the United Sates. PittMoss sources all paper ingredients from local recycling facilities and hand sorts each batch to ensure zero contaminants. Each batch is hand sorted and processed in Ambridge, PA using PittMoss’s custom and patent-pending machinery. PittMoss conducts extensive testing on each batch, and proudly shares information on heavy metals and more with the public via our blog and published research, and as requested.

Ingredients: 99.9% PittMoss paper fibers, with small amounts of organic bark.

Product Benefits

  • Each cubic foot of Prime saves roughly 2,116 lbs of carbon
  • Developed and routinely tested by leading soil scientists
  • 100% Peat-Free
  • OMRI listed for organic gardening
  • Carbon-rich soil amendment to encourage a living soil environment and support regenerative agriculture
  • Lightweight material easy to carry around
  • Lots of air space to aerate existing mixes and encourage root growth
  • Reduce your resources with better water absorption, wicking and decreased runoff
  • PittMoss fibers are manufactured 100% in the USA – supporting green manufacturing

Product Results

Product Reviews

Customer Reviews
5.0 Based on 4 Reviews
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    Sheryl B.


    I give PittMoss potting mix a 5 ⭐️. I recently repotted several of the same plant, and thought I’d run out for the second one. (I found it too late. 😂) The second plant has just dirt and it’s nearly dead, while the first is spawning it’s replacement. I’ll be using the good stuff for that one!

    Joel M.


    ​Love the product. I rate it a 10 out of 5! I suggested earlier that you expand into making compostable/biodegradable plant pots for seedlings.

    Brooke J.


    I would rate pitmoss 5 stars. I’ve bought several bags and the plants I planted with pitmoss are thriving much better than the ones without pitmoss. I will never buy a bag of potting soil dirt again.

    Christine C.


    Five stars… I think the fact I keep coming back and purchasing more proves that! Seriously, I live in an apartment complex with a community garden. My box is the best it has been in years. I attribute that to the PittMoss. Thank you.

    Have a question about this product? PittMoss will answer!

      What is the CEC value of PittMoss?
    1. Q What is the CEC value of PittMoss?
      Asked by Jeremy E. Schissler on November 29, 2021 8:50 am
      There are no answers for this question yet.
    2. Can it be used as mulch to keep weeds down?
    3. Q Can it be used as mulch to keep weeds down?
      Asked by Patricia on July 3, 2021 2:54 pm
      Answered by the admin

      Hi Patricia, PittMoss is not for barring against weeds per say, so I'm not sure that it would be ... Read more

    4. Is Pittmoss Prime just the Pittmoss material? What ph does the Pittmoss prime start at
    5. Q Is Pittmoss Prime just the Pittmoss material? What ph does the Pittmoss prime start at
      Asked by Joseph Biondo on June 14, 2021 6:07 pm
      Answered by the admin

      Prime is comprised of PittMoss paper fibers and organic bark. Prime's pH averages 6.5

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