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Plant Enzymes

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Making Growing Simple, Exciting, and Easier to Succeed At

Plant Enzymes is a highly concentrated enzymatic formula with a guaranteed content of 7,000 units/ml of active enzyme, making Plant Enzymes the strongest on the market!

Product Information

About Plant Enzymes

CONTAINS 7000 UNITS OF ACTIVE ENZYME PER MILLILITER: Humboldts Secret Plant Enzymes is a highly concentrated enzymatic formula with7,000 units/ml of active enzyme, making Plant Enzymes one of the strongest plant fertilizers on the market!

GREAT FOR HYDROPONICS AND COCO SUBSTRATE: Hydroponic and coco substrate benefit greatly from enzymes, as these typically have few microorganisms that digest dead root matter. Our formula is compatible with all growing mediums.

PLANT ENZYMES REJUVENATE SOIL: If you are reusing a soil cultivation, Plant Enzymes acts as plant food that will rejuvenate the soil by breaking down roots from the previous plant.

LOW USAGE RATE: Our strong and highly concentrated enzymatic formula contains 7,000 units of active enzyme per milliliter, which results in a very low usage rate of only 1ml/gallon. Humboldts Secret Plant Enzymes is one of the strongest ones out there!

Plant Enzymes Feed Chart

Mixing Procedure

1) Fill your reservoir with water.  It may be filtered or tap water.  If you use filtered water you may need to add some CalMag & Iron.

2) Add HUMBOLDTS SECRET NUTRIENTS listed on the feed chart (Shake each bottle a little bit)

3) After you add your nutrients, adjust the PH so that your end mixture in your reservoir is between 5.5 and 6.5 (If needed.)

4) Can be used in Soil, Coco, Deep Water Culture (DWC) and Aeroponics.  Typically less nutrients are used in DWC. If you grow in Hydroponics it is recommended that you use  Golden Tree at a lower dose and use Plant Enzymes. We suggest you play around with the amounts of each nutrient and find out what works best for your setup as there are many variations to growing.

Additional Information

1) In order to have a successful grow growers should use at minimum Base A, Base  B & Golden Tree. 

2) For Veg: Add 1-2ml of Golden Tree per gallon to your reservoir. Then, add your base nutrient until PPM levels of the reservoir mixture reaches between 800-1000 (Hanna Scale)

For Flower: Add 2-5ml of Golden Tree, then add base nutrient into your reservoir  until your PPM levels of the reservoir mixture reaches between 1000-1300 (Hanna Scale, which is 2.0-2.6 in EC.) Remember that this is a rough estimate. Strains and growing mediums vary, some will enjoy higher PPM's and some lower.  Flushing at the end is not necessary.

Shake bottle and measure out 1mL per gallon of water

Dilute Plant Enzymes into a full watering can/reservoir and stir to thoroughly combine.

Only apply to the root zone, and for optimal results feed with every watering throughout your entire grow cycle

We are confident that you will be pleased with your product and offer a 6 month 100% satisfaction guarantee.

Refer to our return policy for full terms for the satisfaction guarantee.

Frequently Asked Questions

YES! Plant Enzymes is particularly helpful if you are growing in DWC, Coco, and Aeroponics

You can use Plant Enzymes with every nutrient feeding.

Follow this simple experiment to see visually see Plant Enzymes in action: Mix 10ml (2 teaspoons) of Plant Enzymes into one cup of water. Place a 1x1 inch piece of paper and place in mixture. Stir and let the paper sit at the bottom of the mixture for 24 hours. Afterwards, shake the mixture and paper will disintegrate. Water alone will not disintegrate the paper.

Plant Enzymes contains over 7,000 active units/ml of the enzyme Cellulase which breaks down Cellulose; the most abundant element on earth - it’s what make up dead root matter!

Customer Feedback

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Rated by hundreds of happy growers

Grow bigger plants in less time without struggle

Get the Startaer Kit for only $170.77 $99.99

Each Starter Kit Includes:

  • World's Best Base Nutrient System Grow & Bloom Base A and B (1/4 Gallon of Each)
  • Golden Tree (1/8 Gallon)
  • Flower Stacker (1/4 Gallon)
  • CalMag & Iron (1/4 Gallon)
  • Plant Enzymes (8 Ounces)
Customer Reviews
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Filter Reviews:
anthony t.
United States

I have no idea what it does.

I use it every time I water but have no idea what it is supposed to provide for the plants. My results are good so no complaints.

Scott B.
United States United States

Works well!

I've been using for 2 years and my plants have been healthy. I would recommend using the whole line as I do. Always healthy, never disease or bugs!

alontae H.

eh it’s cool

never really noticed a difference but didn’t **** my plants

Cole M.


I am just sprouting a white widow if it germinates, and I really look forward to using this along with the fox farms 12 pack


Potent stuff!

Very potent fertilizer. Not quite sure how this works but on the advice of my tree man informed me that this might be the best bet for a tree that I have in my yard that is failing so far so good after trees back to life I’ll see how it goes from this point on