Mammoth P

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Active Microbials Nutrient Liberator. Invented by a team of Colorado State University PhD soil microbiologists with a passion for soil health and sustainable agriculture. They used directed microbial phenotyping to create a concentrated blend of Pseudomonas putida, Comamonas testosteroni, Citrobacter freundii and Enterobacter cloacae, which act as tiny bioreactors, constantly emitting enzymes that liberate soil-bound phosphorus and micronutrients.

Cannabis growers using Mammoth P see bud yields 16% higher than in untreated plants, as well as stronger plants less susceptible to lodging. Use may be restricted to the bloom stage, but for best results use throughout the growth cycle (even during flushing). Also useful after field applications of Calphos or Tennessee Brown Phosphate to speed phosphorus release.

Mix at 0.6 mL/gallon water: 120 mL bottle treats 12 plants from clone to harvest; 500 mL treats 50. This is a live product: color changes and sediment are normal. It’s a bit stinky but will help you grow more stinky, sticky buds. As they say in the distinctively scented paper-mill towns around here, “It smells like money.” NEW!



8180 Mammoth P
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A: 120 mL $50.00
  OMRI Certificate
B: 500 mL $150.00
  OMRI Certificate
($142.50)
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Organic Certification

Inoculants, soil amendments, fertilizers, livestock supplies and pesticides are labeled as:
OMRI: Organic Materials Review Institute. Most state certifying agencies, including MOFGA, accept OMRI approval.
MOFGA: Reviewed and approved by the Maine Organic Farmers & Gardeners Association Certification Services. Allowed for use on MOFGA-certified farms. Check with your certifier.
WSDA: Listed by the Washington State Department of Agriculture’s Organic Certification division for use in organic agriculture in Washington State. MOFGA has indicated that they will accept products on this list for their certification program. Check with your certifier.
Nat’l List: One-ingredient products on the NOP* List of Allowed Substances (subpart G of the Organic Foods Production Act, sections 205.601-606). Check with your certifier.
AYC: Ask your certifier. Has not been reviewed by a certifier, but the active ingredient is allowed. Ask your certifier.
Not Allowed: A few of the products we list are not allowed for organic production but we think they have a place in sensible agriculture and can be used when certification is not an issue.

Click here for our list of soil amendments, fertilizers, and disease and insect controls along with their certification status and manufacturers.