Royal Gold® Earthworm Castings 1cu ft

OMRI Listed Pure Worm Castings for Soil Biology, 1cu ft

A growing medium that leans on synthetic fertilizer alone often misses the microbial diversity that healthy, resilient root systems depend on. Royal Gold's Earthworm Castings add that biology back in, delivering a premium-grade vermicompost naturally rich in plant-available macro and micronutrients, beneficial microorganisms, and humic acids.

This 1cu ft size suits home gardeners and small-scale growers mixing castings into potting media or top-dressing a modest number of containers and beds without committing to bulk tote volume.

Key Features & Benefits

• Premium-grade vermicompost — processed to the same exacting quality standard Royal Gold applies across its potting soil line.
• Rich in plant-available nutrients — supplies naturally occurring macro and micronutrients in a mild, well-rounded form.
• Beneficial microorganisms and humic acids — supports root zone biology and nutrient availability over time.
• OMRI Listed® — certified for use in certified organic production programs.
• 1cu ft bag size — sized for home gardeners and small-scale amendment or top-dressing use.

Who Should Use This

Gardeners and growers looking to boost soil biology, add a gentle nutrient charge, or top-dress established containers and beds benefit from Earthworm Castings' mild, well-rounded profile. It suits both soil and soilless growing environments and works well alongside a standard fertilizer program rather than replacing one.

About Royal Gold

Royal Gold has spent nearly twenty years building its reputation from a small family operation in Humboldt County, California, to a company with mixing and packaging operations that now also reach Upstate South Carolina. Earthworm Castings are processed to the same exacting quality standard the company applies across its potting soil and amendment lines.

Frequently Asked Questions

What are earthworm castings?

Earthworm castings are the organic material left behind after worms process plant matter, widely recognized as one of nature's most complete and biologically active soil amendments. They're naturally rich in plant-available nutrients, beneficial microorganisms, and humic acids.

How do I use Earthworm Castings in my garden?

Mix castings into soil or soilless media before planting, or use them as a top dressing on established containers and beds. A light, even application is typically enough since castings are a mild amendment rather than a concentrated fertilizer.

Are these castings suitable for organic growing?

Yes, Royal Gold Earthworm Castings are OMRI Listed®, meeting the standard for use in certified organic production. They're a common component in organic soil-building programs.

Can I use castings as my only fertilizer?

Castings provide a mild, well-rounded nutrient and microbial boost, but most growers pair them with a dedicated fertilizer program for crops with higher nutrient demands. Treat them as a soil-health amendment rather than a complete feeding solution on their own.