“Fun illustration showing ingredients like peat moss, compost, pumice, neem meal, kelp, and crab meal going into a mixing bin, labeled as Clackamas Coot Living Soil Mix.”

Clackamas Coot’s Legendary Living Soil Mix: The Original Organic Game-Changer

Who Is Clackamas Coot?

Clackamas Coot — the pseudonym of Jim Bennett — is one of the most influential voices in the organic cannabis cultivation community. While he didn’t set out to become an internet legend, his decades of work with no-till gardening, soil biology, and homemade composting have earned him iconic status.

Coot challenged the traditional bottle-fed nutrient model and showed growers that they could create living ecosystems in their pots, where plants thrive off microbe-cycled nutrients — not synthetic salt fertilizers.

He’s considered one of the fathers of the modern “living soil” movement, especially within the cannabis industry.


🌍 What Is Living Soil?

Living soil is a style of cultivation where the focus shifts from feeding the plant directly to feeding the soil — and letting a community of microbes, fungi, and organic material deliver nutrients to the plant in natural cycles.

Rather than using synthetic nutrients and flushing regimens, living soil mimics nature:

  • Worms, fungi, and bacteria break down compost
  • Roots absorb what they need, when they need it
  • Water-only grows are possible when the ecosystem is dialed in
  • Soil can be reused for years, reducing waste and cost

Clackamas Coot’s recipe was one of the first standardized mixes to bring this concept into practice for cannabis growers — and it still holds up.


🧪 Clackamas Coot’s Original Soil Mix (DIY)

Here’s the classic recipe Clackamas Coot shared with the world. It’s a build-your-own soil blend that you mix, let “cook” for 2–4 weeks, and then use — with no need for bottled nutrients or pH pens.

🧴 Base Mix (1 part each):

  • 1 part sphagnum peat moss (not coco)
  • 1 part compost or worm castings (high-quality, local preferred)
  • 1 part aeration (pumice, rice hulls, or perlite)

Example for 30 gallons: 10 gal peat, 10 gal castings, 10 gal pumice

🌾 Amendments (per cubic foot of base mix):

  • 1/2 cup kelp meal (rich in micronutrients and plant growth hormones)
  • 1/2 cup neem seed meal or karanja meal (natural pest deterrent, slow nitrogen)
  • 1/2 cup crab or shrimp meal (provides calcium, chitin for pest defense)
  • 4–6 cups basalt rock dust (adds trace minerals and increases microbial activity)
  • 1 cup gypsum (calcium sulfate) (provides sulfur and loosens soil structure)
  • 1/2 cup oyster shell flour (optional) (adds calcium and buffers pH)

🧠 No blood, bone, or guano is used — Coot intentionally left out factory-farmed and high-N inputs.


🐛 Why This Mix Works So Well

The Clackamas Coot mix isn’t just a random pile of organic stuff — it’s intentionally designed to build a soil food web.

  • Peat moss holds water and provides an acidic carbon base
  • Worm castings/compost are the microbial engine of the soil
  • Pumice or rice hulls improve drainage and oxygen flow
  • Kelp and neem feed both microbes and plants
  • Crab and gypsum bring in minerals and pest resistance
  • Basalt rock dust re-mineralizes the soil over time

By mixing this once, letting it rest (or “cook”), and then planting into it, you’ve created a self-sustaining micro-ecosystem — a true living soil.


🕳️ Cooking the Soil: Don’t Skip This Step

Once you’ve mixed your soil, it’s crucial to let it sit — ideally in a large tote or fabric pot — for 2 to 4 weeks before planting. This lets:

  • Microbial populations colonize the soil
  • Nutrient exchanges stabilize
  • Hot compost materials mellow out

During this phase, keep the soil moist (like a wrung-out sponge) and turn it once a week for aeration.


🌿 How to Use the Mix

  • Transplant directly into the soil once it’s cooked
  • For seedlings, you can cut it 50/50 with peat or use a lighter mix
  • Top-dress with worm castings, neem, or kelp every 30 days
  • Reuse the soil after harvest by refreshing compost and amendments

With proper composting and maintenance, this soil can be recycled indefinitely — no need to buy new bags every grow.


♻️ Why Coot’s Soil Is More Sustainable

Clackamas Coot was one of the first to popularize closed-loop growing — the idea that a grower could build a sustainable soil once, and maintain it with compost, mulch, and minimal outside inputs.

Compared to synthetic grows:

Living SoilBottle Nutrient System
Reusable for yearsTossed after every harvest
Minimal runoff or salt buildupFlush cycles required
Supports soil microbiomeKills microbes with salts
Organic inputs, often homemadeIndustrial chemical production
No pH or EC meters requiredConstant monitoring needed

📢 Coot’s Impact on the Cannabis Growing World

Clackamas Coot didn’t sell soil. He didn’t start a nutrient company. He simply shared information — on forums, interviews, and blogs — and showed people how to grow cleaner, healthier cannabis by working with nature, not against it.

He helped pave the way for:

  • The no-till cannabis movement
  • Commercial living soil farms
  • The popularity of DIY worm bins and homemade inputs
  • A generation of growers who ask what does the soil need?, not what can I add to the plant?

His mix is still used today — often adapted slightly — by organic growers around the world.


🧪 Bonus: Modern Tweaks You Can Try

Many growers have built on Coot’s mix with some upgrades:

  • Adding biochar (pre-charged with compost tea) for microbial habitat
  • Including gro-kashi or bokashi for additional fermentation inputs
  • Using DIY fermented plant extracts (FPJ, KNF-style)
  • Layering mulch (straw, comfrey, etc.) for surface nutrient cycling

🌼 Final Thoughts: The Legacy of Living Soil

Clackamas Coot’s soil recipe isn’t just a growing medium — it’s a mindset.

It asks you to slow down, build relationships with your soil, and think of your garden as a living system, not a machine that runs on liquid feed.

If you’re tired of chasing bottles, fixing deficiencies, or wasting money on soil bags every cycle — it might be time to build your own soil and let nature do the heavy lifting.

Because when you build your soil… it starts building your plants.