HEAT ALERT! For deliveries during hot weather please have coolers with cold packs ready with a note--FedEx/UPS drop here. HEAT ALERT! For deliveries during hot weather please have coolers with cold packs ready with a note saying 'FedEx/UPS drop here' if not available to accept delivery.

Compost Tea Catalyst


Growing Solutions’ Compost Tea Catalyst is a unique blend of ingredients formulated to stimulate diverse microbial growth during aerated compost tea production. In addition to seaweed extract, humic acid and mineral powder, Catalyst contains an array of select botanical ingredients without the use of simple sugar acting as a natural biostimulant. 

Biodiversity is the key to resilience in natural systems. Good compost contains a broad diversity—thousands of different species—of beneficial microorganisms, many of which can be extracted into solution. Adding a supplemental food source during the Compost Tea production cycle promotes robust growth and proliferation of specific types of desirable microorganisms. Growing Solutions Compost Tea Catalyst is a microbial food source that contains soluble kelp, rock powder and a blend of botanical ingredients formulated for optimal microbial growth and diversity. Compost Tea Catalyst contains only complex carbohydrates—no molasses or simple sugars.

Growing Solutions Compost Tea Catalyst™ is listed with the Organic Materials Review Institute (OMRI) as an accepted input in certified organic operations. Organic growers and producers can use OMRI listed products with confidence because certifiers accept OMRI’s product review decisions.


  • Formulation to enhance microbial growth and diversity
  • For use in organic agricultural production
  • Easy-to-use powder
  • Ideal for use in any compost tea system

   Available in four convenient sizes.

  • 15 oz produces 50 gallons of tea
  • 4.5 lbs produces 250 gallons
  • 9 lbs 500 gallons
  • 45 lbs 2500 gallons

Also available: 540 lbs bulk tote, please inquire for pricing and freight!

Compost Tea Catalyst OMRI Certificate

Benefits of Compost Tea

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