Effective Microorganism (EM) - Activated

Effective Microorganism (EM) - Activated

Organic Gardener's Pantry

  • $10.81
    Unit price per 


Liquid concentrate (activated) of beneficial microorganisms, featuring enhanced levels of Phototrophic, Purple Non-Sulfur Bacteria (PNSB), which have the ability to thrive in any environment—aerobic or anaerobic.

Certified Organic?

no, but mother culture is certified OMRI

Other Certification?



Soil application: 1:100 in water

10 mL (2 tsp) per L

40 mL (just under 3 tbsp) per gal (4 L)

1 L per 25 gal (100 L)

1 gal (4 L) per 100 gal (400 L)

Foliar aplication on outdoors, mature plants: 1:250 in water

4 mL (just under 1 tsp) per L

16 mL (just over 1 tbsp) per gal (4 L)

1 L per 62.5 gal (250 L)

1 gal (4 L) per 250 gal (1,000 L)

Foliar application on houseplants or in a greenhouse: 1:1000 in water

1 mL (a few drops) per L

4 mL (just under 1 tsp) per 1 gal (4 L)

10 mL (2 tsp) per 2.5 gal (10 L)

1 L per 250 gal (1,000 L)

1 gal (4 L) per 1,000 gal (4,000 L)


Activated EM may continue to off-gas, especially after transport and during warm weather. Loosen cap to relieve pressure in bottle as needed, then close tightly again.

Yeasty-white particles floating at the surface of the product is normal and does not affect quality.

Avoid spraying on blossoms and very young, tender seelings/plant tissues

Store product undiluted, tightly seeled, and protected from direct sunlight, heat, and frost. Mix only what you need that day -diluted mixed product does not keep long.

Learn More

See ‘Manufacturer's Website
e.g. Uses, Benefits, Features, Directions, Application Rate, Handling Safety, Content Analysis

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