Earthworm Castings: The Ultimate Organic Fertilizer for Every Garden Use

Research confirms: vermicompost (worm castings) outperforms conventional compost in stability, nutrient availability, and plant response. Here's the science and precise application rates.

Proven Benefits

• Improves aeration, porosity, structure, drainage, moisture retention.
• More stable and consistent than traditional compost.
• Eliminates need for synthetic fertilizer in many crops (e.g., tomato plugs).
• Increases height, stem diameter, root mass, dry weight, flower count vs. peat moss.
• Richest humus source—suppresses pathogens, fungi, nematodes, bacteria.
• Microbial activity 10–20× higher than ingested soil.

Production Power

1 lb worms converts 1 lb pig manure to compost in 48 hrs. Red wigglers eat their weight daily—10 lbs worms process 10 lbs waste in 24 hrs.

Application Rates

• Vegetables/annuals: 2″ in rows/holes; ½ cup/plant or 1 cup/ft row every 8 weeks.
• Perennials: ½ cup worked in spring, midsummer, early fall.
• Pots/hanging baskets: ½″ top-dress, water in; repeat every 8 weeks.
• Roses: 4 cups/plant.
• New lawn: 15 lbs/100 sq ft at seeding; 7 lbs/100 sq ft maintenance.

Vermicompost isn't fertilizer—it's living soil medicine. Use it, and watch your garden transform.