Compost Tea Brewing

Match brewing equipment and catalyst size to the batch volume and method.

Bucket, pump, tubing, and supplies for brewing compost tea

Compost tea brewing supplies help aerate, contain, mix, and apply a water-based compost extract. Equipment and additives serve different roles: brewers and pumps provide aeration, mesh bags contain compost, and catalysts supply ingredients used during the brew.

Build a Complete Brewing Setup

  • Brewer or vessel: Choose a size appropriate for the batch volume.
  • Aeration: Use the pump, tubing, and diffuser specified for the brewer.
  • Compost and containment: Start with mature compost and use a suitable mesh bag when the system requires one.
  • Catalyst: Measure the selected product at its stated rate; catalyst formulas are not interchangeable.
  • Application: Select a watering or spraying method appropriate for the finished brew and its intended use.

Follow Product-Specific Brewing Directions

Brewing time, temperature, water quality, sanitation, catalyst rate, and application guidance vary. Follow the current brewer and additive instructions. Keep equipment clean, avoid unverified substitutions, and use the finished brew within the stated time.

Choose Catalyst Size by Batch Volume

The 15 oz Compost Tea Catalyst treats up to 50 gallons at 7 tablespoons per 10 gallons. The 4.5 lb Compost Tea Catalyst treats up to 250 gallons; measure each batch according to its current directions.

Read What Is Compost Tea?, use the Compost Tea Interactive Guide, or browse supplies for making compost.