Worm Castings

Compare bagged worm castings, fortified casting blends, and liquid earthworm-casting extracts for your growing program. This collection includes Worm Poupon castings, Riverview Living Soils Bio-Boost, and Worm Power Liquid Extract. Choose by formulation and intended application rather than treating every casting-derived product as interchangeable.

Bagged castings and fortified blends

Worm Poupon is offered in a 30 lb bag. Riverview Living Soils Bio-Boost comes in a 0.5 cu ft bag and combines worm castings with additional ingredients, including leaf mold compost and biochar. Because Bio-Boost is a fortified blend rather than castings alone, review its ingredient list alongside the amendments already included in your soil or growing media.

Bagged products are the solid-material options in this collection. Follow each product's directions for incorporation or surface application, and account for the existing fertility of your growing mix when planning additions.

Liquid earthworm-casting extracts

Worm Power Liquid Extract is available in 2.5 gallon and 55 gallon sizes. These liquid products are derived from earthworm castings but are not a volume-for-volume substitute for bagged castings or fortified blends. Review the product-specific dilution and application directions for your crop and application method. The 55 gallon listing is identified as a special-order item.

Compare quantities and application directions

Package weights, solid volumes, and liquid volumes describe different quantities. Calculate your requirement from the selected product's directions and the area or volume being treated. Use the individual product page and current label to confirm ingredients, application rates, storage instructions, and suitability for your growing program.