Soil Amendment Worm Castings Label
Pure Earthworm Castings
Pure Earthworm Castings Soil Amendment
Earthworms in Soil
Bulk Bag of Worm Castings

Pure Earthworm Castings

Regular price$39.00
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Shipping calculated at checkout.
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Rocky Mountain BioAg® Pure Earthworm Castings: The Organic Boost for Healthy, Productive Soil

Enhance your garden’s vitality with Rocky Mountain BioAg® Pure Earthworm Castings—an all-natural, nutrient-rich soil amendment that stimulates soil health and plant growth. Created from night crawler castings packed with organic materials, minerals, and trace elements, this “super humus” is a powerhouse soil conditioner that improves plant resilience across all soil types and growing conditions.

Why Choose Pure Earthworm Castings?

Rich in essential nutrients like nitrogen, phosphorus, and potassium, Rocky Mountain BioAg® Pure Earthworm Castings provide the organic solution needed for everything from fruit trees to vegetable gardens and flower beds. These castings are safe for plants, animals, and the environment, making them the ideal choice for eco-conscious gardeners committed to sustainable practices.

Key Benefits:

  • All-Natural & Made in the USA: High-quality, organic castings sustainably sourced for eco-friendly gardening.
  • Improves Soil Structure & Water Retention: Conditions soil to retain moisture, supporting healthy root development.
  • Versatile Applications: Perfect for soil mixes, top dressing, compost teas, and a variety of plants.
  • Nutrient-Rich: Packed with essential nutrients to boost plant health and yield.

Application Instructions:

  • Base Potting Soil: Mix 15–25% by volume per cubic foot of base potting soil.
  • Top-Dressing: Apply 1 tablespoon per inch of pot size as needed.
  • Compost Piles: Add a thin layer of castings between compost layers.
  • Vegetables & Annual Flowers: Line planting holes with 1–2 inches of castings and side-dress throughout the season.
  • Perennials, Roses, Trees & Shrubs: Apply seasonally above root zones; for new plantings, mix castings with soil around roots.
  • Turf Grass: Apply 100 lbs. per 1,000 sq. ft. for established turf or grow-ins, raking in for best results.
  • Compost Tea: Brew 2 cups of castings per 5 gallons of water for 24–34 hours.

Experience the full benefits of sustainable, organic soil conditioning with Rocky Mountain BioAg® Pure Earthworm Castings—a natural, effective solution for vibrant, thriving plants.

TIRED OF BREWING COMPOST TEA?: 

Use Microbe Life Hydro / Quantum Growth microbial inoculants for superior results and apply when the time is right for you! Quantum Organic Light, Quantum Growth Organic VSC and Quantum Organic Total will save you time and money completely the need to brew compost teas. The Quantum Growth Series provides pure biological strains allowing you to perform controlled biological inoculation with replicated results time and time again! No waiting on brewing, just mix the probiotics with clean water your favorite plant amendments / foods and soil drench or foliar apply immediately!

*Contact RMBA for pricing on bulk worm castings*

Customer Reviews

Based on 5 reviews
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P
Pam

Very professional shipping

Thank you so much for your kind words! We're thrilled to hear that you found our shipping services professional. Your satisfaction is our top priority, and we’re delighted to have met your expectations. We look forward to serving you again soon!

P
Pam

Very professional shipping

Thank you so much for your kind words! We're thrilled to hear that you found our shipping services professional. Your satisfaction is our top priority, and we’re delighted to have met your expectations. We look forward to serving you again soon!

M
Michelle M.
Wormie Stuff

Amazing, just like BioAg. I feel special when working w/them. :sunglasses::deciduous_tree::hearts:️:house_with_garden:

GREAT to hear that you enjoy our worm castings and feel special when working with us! Thanks for your business, we look forward to serving you again soon!

N
Nathan W.
Two thumbs up

i got the order fast and the bag was bigger than i thought, i will def be a returning customer.

Great to hear that you liked the amount of worm castings you received and that you will give us another shot at serving you! Thank you for your business, we greatly appreciate it!

G
Gerald L.
Good Stuff!!!

The look, feel and smell when you open the box says it all.

Great to hear that our worm castings are crushing it! Thank you for your business!

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