Terra Preta – Effective Microorganismens (EM)


Effective Microorganisms ensure optimal nutrient utilization and binding, healthy plants through regenerative microbiology and humus growth. Therefore EM create a positive microbiology for animals, humans and plants. To achieve this, they must be used regularly and on a long-term basis. The species composition differs, since the Effective Microorganisms are compiled in many countries and by many competing manufacturers in their own laboratories. However, the differences in composition are not decisive.


 The microorganisms live and work in symbiosis. They are composed of :

*** Lactic acid bacteria, yeast fungi, photosynthesis bacteria and accompanying species ***

EM1= original solution, starter culture

EM-A =self activated (with EM1), fermented sugar cane molasses.

How to cultivate your own EM

Step 1:

Mix 200 mL of sugar cane molasses with 3 L of hot water from the tap and pour mixture into the fermentation box. The fermentation box can be plastic container with a screw cap. By adding another 3 L of water, a temperature of approx. 35°C should be regulated.

Step 2:

To help the mixture dissolve faster, you can heat it in a large pot while stirring. Be careful not to heat the mixture too much. It should remain between temperatures of 34-37°. We recommend tu use your lowest stove stage.You can also use your fingers for testing. If the liquid is too hot for your fingers, remove the pot from the stove.

Step 3:

Once the molasses is completely dissolved, the mixture must rest for a week. Pour the mixture back into the fermentation box and close it halfway. We recommend to use a funnel when decanting the product .It is best to keep it in a warm, quiet place.


The finished EM-a can be harvested or stored in plastic bottles in the refrigerator for 4-6 weeks. It is important not to use glass bottles and not to close the lid completely! The continuing fermentation process builts up a lot of pressure and the bottle could break.


A multiple cultivation is not advisable because the quality decreases with every cycle!

This is because some bacteria can multiply more quickly than the rest.Therefore, if reused too often, the composition changes so much that it becomes inefficient.