Home > Home & Garden >

EM-1 Microbial Inoculant
EM-1 Microbial Inoculant - Effective Microorganisms - EM
EM-1 Microbial Inoculant

Alternative Views:

Put the power of EM Technology® in your hands!

Dr. Teruo Higa's Original Effective Microorganisms®
EM·1® Microbial Inoculant for all your garden and compost needs.

EM·1® Microbial Inoculant is made in the USA.

Get yours today! Ask for EM-1 at your local garden center or grow shop!

Free shipping on 16oz, 32oz, 1 gallon, and 5 gallon containers.
Please note: During winter months all EM-1 shipments will be shipped with Signature Required to prevent freezing.

Microbial Inoculants: EM-1

EM•1® Microbial Inoculant is the original and authentic Effective Microorganisms® that was originally formulated by Dr. Teruo Higa in the mid-1960's.
EM•1® is an all-natural probiotic for plants and soils.
It is made without any GMO ingredients and is USDA certified organic.
Available in pints, quarts, gallons, 5-gallons and 55-gallon barrels.

Gardening with EM-1
Greenhouse Applications
City of Redding, California Leachate and Compost Odor Control
Sweet Potatoes and soil test with EM
Item# Item Name Prices Start At: Prices Start At: Qty Add
1003 EM-1 Microbial Inoculant-1 Gallon (Standard Ground Shipping Included)
1002 EM-1 Microbial Inoculant-1 quart (Standard Ground Shipping Included)
1007 EM-1 Microbial Inoculant-16oz
1004 EM-1 Microbial Inoculant-5-gallon cube container (Standard Ground Shipping Included)
Check the items you wish to purchase, then click


OMRI Listed

California Department of Food and Agriculture Listed for Organic Operations as well. (CDFA OIM)
USDA Certified Biobased Product
Certified Organic by CCOF

  • Improves drought tolerance
  • Restores the natural balance of healthy soil
  • Naturally loosens compacted soil
  • Improves seed germination and root development
  • OMRI Listed
  • Increases nutrient availability
  • Improves plant quality: size, color, and shelf life
  • Accelerates conversion of organic matter into soil humus
  • Increases beneficial microbial activity
  • Bioremediation Bacteria Eliminates Foul Odors In The Home (Pets, Smoke, Garbage, Drains, Paint, etc.)


Microorganisms: Minimum of 1 million colony forming units/cc (units/ml), Lactic Acid Bacteria

Water and Molasses

There is an expiration stamped on every bottle of EM-1, as well as a batch number. The Expiration date is generally close to 12 months from shipping.


For all household applications:
Applying EM•1 ® is very simple. You have two options. The first is to use it right from the bottle. The second is to make Activated EM-1 and cut your costs by 22 times! Just fill the reservoir of a hose-end sprayer with EM•1®, as you would with any fertilizer, and spray all your plants. One hose-end sprayer will treat about 1/8 acre. For best results spray once per week throughout the growing season and pre-treat all your organic matter (potting soil, peat moss, compost, etc.) with EM•1® (this is also known as a drench). Some hose-end sprayers let you dial in the dilution rates. You can use the rates suggested on our label to set the application rate. We suggest one ounce per gallon (2 TBS) for all plants. The best time to spray is early evening.

For Agriculture:
Average applications are 1 gallon of Activated EM-1 per acre per week from sowing seed until harvest. There are some variations depending on the plant. Total rates vary:
Cotton, Corn, Hemp, Soy and Wheat is 15 gallons total per crop. Most other crops benefit from 25 to 40 gallons per acre per season.

For Hydroponics:

  • 3% solution EM•1® Microbial Inoculant several times per week.
  • Feed with a 2% solution of nutrients several times per week.

Water can also be conditioned using our 35mm Pipe Ceramics. For every 1,000 gallons of water in tanks, use 4 sets of the 35mm EMX Ceramic pipes. They can be put inside a 1 1/4" PVC pipe and plumbed directly into the main supply line. This will help condition the water and pull out dissolved solids in the water. If the unit is set up on a circulation system, you will notice it makes better use of the ceramics.

In the water lines, add Activated EM-1 starting at a rate of 1:1,000 (1 teaspoon per gallon) and as needed to maintain recommended dilution ratios with replacement water. Continue to use nutrient solutions as EM•1® is not a replacement for nutrients. Facilities that water every day should dilute 1 part AEM to 10,000 parts water.

Make Activated EM-1 for all of the applications above. 1 gallons makes 22 gallons of usable product.

Do not store EM·1® in direct sunlight. Store in closed container at room temperature. Do not freeze.

Product shelf life is per expiration date printed on label when product is left unopened. After it is opened, life is dependent upon conditions on which it is stored of which EMRO USA (manufacturer) nor TeraGanix will guarantee. Neither EMRO USA nor TeraGanix, Inc will guarantee activated products, homemade bokashi, homemade EM5, or homemade EM FPE at any time.

Average Customer Review: Average Customer Review: 4.5 of 5 4.5 of 5 Total Reviews: 127 Write a review.

  0 of 0 people found the following review helpful:
5 of 5 Feedback December 6, 2019
Reviewer: seshukumar sareday from Los Gatos, CA United States  
Great product. Need to adjust based on how one feels .instructions to use the stone can be a little more detailed. Example - can it be used in hot water ?

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Always love this one December 5, 2019
Reviewer: Marie Holloway from Sierra Vista, AZ United States  
This is sooo potent, wonderful, useful and high quality.  We always like it in good supply - repopulating good critters is so important.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 Key item for the green earth! November 29, 2019
Reviewer: Anonymous Person from CA United States  
We have been using EM-1 for making EM Bokasi, which makes food waste into fertilizer.  Vegetables glow well and tasty!
Also we use it for cleaning pipes, reducing the bad odor of the carpet, laundry and etc.  
EM-1 is the key item.

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 confirmación November 6, 2019
Reviewer: Enrique Garcia from San Jacinto, CA United States  
Es un producto muy bueno trabaj bien en todas sus aplicaciones

Was this review helpful to you?

  0 of 0 people found the following review helpful:
5 of 5 September 27, 2019
Reviewer: Irene Del Rio from Fremont, CA United States  
So far it did everything I expected the product to do but haven't had it very long yet. Still experimenting..!

Was this review helpful to you?

View All Customer Reviews

This product is also used in the following categories:

Home & Garden
EM-1 Microbial Products
Sustainable Living
Shop Our Products
Livestock > Zoos
Livestock > Odor Control
Sustainable Living > Deodorizing
Fruits & Vegetables
Trees & Shrubs
Soil Treatment
Lawn & Grass
Agriculture > Agricultural Compost
Agriculture > Hydroponics
Agriculture > Aquaculture
Agriculture > Seed Treatments
Agriculture > Orchards & Vineyards
Agriculture > Foliar Feeding
Agriculture > Field Crops
Agriculture > Crops & Soils
Sustainable Living > Chemical Sensitivities
Agriculture > Compost Teas
Agriculture > Greenhouses
Instructions > Garden Solutions
Instructions > Garden Solutions > Ponds
Instructions > Garden Solutions > Vegetables
Instructions > Garden Solutions > Trees & Shrubs
Instructions > Garden Solutions > Soil Treatment
Instructions > Garden Solutions > Lawn & Grass
Instructions > Garden Solutions > Flowers
Home & Garden > Composting & Bokashi > Compost
Indoor Plants
Featured Products
About Effective Microorganisms
EM Recipes > EM® FPE
EM Recipes > EM5
EM Recipes > Activated EM-1
EM Recipes > EM-1 Bokashi
EM-1 Microbial Products > EM-1 Effective Microorganisms
Sustainable Living > Bathing | Skin Care
Home & Garden > EM1 For Gardening & Landscaping
Starting Seeds With EM-1
EM Recipes
Instructions > Garden Solutions > Kiwi
Agriculture > Turf & Golf Courses
Home & Garden > Composting & Bokashi
Shop Our Products > EM-1 Microbial Products