Bulk Soil Amendments for Landscapers & Farmers

Ancient Soil: The Foundation of Healthy Soil

Worm castings aren't just fertilizer—they're a complete soil ecosystem in a bag. Every pound contains billions of beneficial microorganisms that colonize your soil, break down organic matter, and create the living network that keeps plants thriving year after year.

Whether you're prepping beds for a landscape installation, treating seeds before planting, or turning manure into black gold, our Ancient Soil worm castings give you the microbial foundation that synthetic products destroyed.

We sell bulk because professionals need bulk. From 25 lb bags you can toss in the truck to 2,000 lb supersacks that dump right where you need them—we've got the sizes that make sense for real operations.

Available Sizes for Commercial Operations

25 lbs

Seed treatment for 5-10 acres or amends 50-100 sq ft of beds

50 lbs

Handles larger seed treatment jobs or 100-200 sq ft

100 lbs

Multiple landscape jobs or 200-400 sq ft of intensive amendment

500 lbs

Week's worth for active crews or field-scale operations

1,000 lbs

Half-ton tote for serious volume

2,000 lbs

Supersack - one ton ready to deploy

Supersack Pro Tip: The Landscaper's Secret Weapon

The 2,000 lb supersacks are game-changers for landscapers running skid steers or loading wheelbarrows. Here's the move:

Lift it: Use your skid steer forks or tractor bucket to lift the supersack
Position it: Move it right over where you need the material—planting bed, staging area, whatever
Slit the bottom: Make a controlled cut in the bottom seam while it's suspended
Let gravity work: Castings dump exactly where you need them, no shoveling, no double-handling

You just saved yourself hours of labor and your back will thank you. Plus the empty bag folds flat for disposal—way easier than dealing with dozens of small bags.

For Landscapers

New Landscape Installations

Planting Beds & Gardens

Mix 10-20% castings by volume into your soil. For a 100 sq ft bed that's 4 inches deep, you're looking at about 25-50 lbs of castings.

Tills in easy with existing soil
Creates air pockets for better drainage
Microbes colonize immediately
Lasts 3-6 months before needing top-dressing

Tree & Shrub Installation

Backfill holes with native soil mixed 20% with castings. For a 2-foot planting hole, that's about 10-15 lbs of material.

Reduces transplant shock significantly
Gets roots established weeks faster
Natural rooting hormones in castings stimulate growth
Way fewer callbacks about struggling plants

Sod Installation

Broadcast 50-100 lbs per 1,000 sq ft over prepared soil before laying sod. Work in lightly with a rake.

Sod roots penetrate faster into existing soil
Microbes help break down the interface layer
Better drought tolerance once established
Clients notice the difference in color within weeks

Quick Math for Crews: One 2,000 lb supersack handles roughly 20,000-40,000 sq ft of landscape bed preparation at a 10% mix rate, or about 40-80 tree installations.

Maintenance Applications

Don't let established landscapes starve. Top-dressing with castings is how you keep clients' properties looking better year after year without tearing everything out.

Annual Top-Dressing

Spread 1/4 to 1/2 inch layer around established plants in spring and fall. About 10-20 lbs per 100 sq ft.

Refreshes soil biology that died off over winter
Slow-release nutrition for the whole season
Breaks down mulch faster into actual soil
Clients see lusher, healthier growth

Problem Soil Recovery

When you inherit a property with dead, compacted, or chemically-damaged soil, heavy applications of castings can bring it back.

Apply 1-2 inches and work into top 6 inches of soil
Microbes start breaking down compaction
Aggregates form, improving structure
Usually see improvement within one growing season

Zero Burn Risk

You literally cannot over-apply worm castings. New crew members can't mess it up, and you're not liable for burning a client's $10,000 landscape.

Instant Use

Unlike compost that needs to age, castings are ready to plant in immediately. No waiting, no testing, just use it.

Disease Suppression

The beneficial microbes actively suppress root diseases. Fewer dead plants means fewer warranty replacements.

Water Efficiency

Castings improve water retention in sandy soil and drainage in clay. Either way, plants need less irrigation.

Long-Term Results

Effects last 3-6 months per application. Clients get continuous improvement, not just a quick green-up that fades.

Client-Friendly

It's organic, safe, and smells earthy (not offensive). Clients with kids and pets appreciate that you're not spraying chemicals.

For Farmers

Building soil health one field at a time

Seed Treatment

High-ROI Application

Coating seeds with worm castings before planting inoculates them with beneficial microbes right from germination. This is one of the most cost-effective things you can do.

Application Method

Mix 2-5 lbs of castings per bushel of seed. We're talking about a light dusting that coats the seeds, not a heavy layer.

Tumble in a cement mixer or seed treater for even coating
Can be applied with existing seed treatments
Works with planters that have seed firmers
Microbes wake up when seeds hit moisture

Benefits You'll See

Faster germination (often 1-2 days earlier)
Better seedling vigor and root development
Protection against damping-off and seed rot
Plants establish faster, handle early-season stress better

Coverage for Seed Treatment: One 50 lb bag treats roughly 10-20 bushels of seed (varies by seed size). A 500 lb tote handles 100-200 bushels. For most row crop operations, figure 5-10 lbs per acre worth of treated seed.

Manure & Litter Enhancement

Here's where it gets interesting. Mixing worm castings into chicken litter or manure before spreading supercharges the composting process and makes the nutrients way more plant-available.

How It Works

Mix 50-100 lbs of castings per ton of manure or litter. The microbes in castings break down the raw material faster and more completely.

Speeds up composting by 30-50%
Reduces ammonia volatilization (less nitrogen loss)
Breaks down the "hot" nitrogen into stable forms
Results in finished compost that won't burn crops

Application Strategy

Mix castings into manure piles before field application
Or add to spreader as you're loading manure
The microbes colonize the pile and start working immediately
If composting in windrows, mix in at the start

ROI Calculation: If you're spending money hauling and spreading manure anyway, the 5-10% cost of adding castings gets you 30-50% better nutrient availability. That's a no-brainer when you look at fertilizer replacement value.

Broadcast Field Application

For high-value crops or fields you're specifically trying to build up, broadcasting castings is the most direct approach.

Application Rates

200-500 lbs per acre, depending on crop value and soil condition. Spread before planting and incorporate with tillage, or top-dress established crops.

Works through standard dry fertilizer spreaders
Can be blended with other dry amendments
Gets microbial activity into root zone quickly
Effects typically last full season

Best Candidates

Vegetable operations (high value per acre)
Specialty crops where soil health is critical
Fields transitioning to organic certification
Problem fields where you're trying to recover soil biology

Reduce Synthetic Inputs

The nitrogen-fixing and phosphorus-solubilizing bacteria in castings make more of what's already in your soil available. Less purchased fertilizer needed over time.

Build Soil Carbon

Worm castings are stable humus that doesn't volatilize. Every application adds to your soil's organic matter percentage.

Improve Water Infiltration

Microbial activity creates soil aggregates that allow water to infiltrate instead of running off. Better moisture throughout the season.

Easier Organic Transition

If you're transitioning acres to organic, worm castings rebuild soil biology faster than anything else. Get productive sooner.

Natural Disease Control

Beneficial microbes suppress soil-borne pathogens. Less disease pressure means healthier crops without fungicides.

Nutrient Density

Healthier soil grows more nutritious crops. Higher brix readings, better flavor, sometimes premium prices.

Works in No-Till

You don't need to till castings in. Broadcast them and let rain and biology incorporate them naturally.

Stacks With Everything

Compatible with whatever you're already doing. Add to existing fertility program for better results across the board.

Why Worm Castings Beat Everything Else

Factor	Worm Castings	Synthetic Fertilizer	Regular Compost
Nutrient Availability	Immediately available, slow release	Immediate, short duration	Slow release, less available
Burn Risk	Zero - impossible to over-apply	High if misapplied	None
Microbe Count	Billions per gram	Kills soil biology	Good levels
Soil Structure	Significantly improves	Degrades over time	Improves moderately
Duration of Effect	3-6 months	2-4 weeks	2-4 months
pH Impact	Neutral to slightly alkaline	Can acidify soil	Varies by source
Ready to Use	Immediately	Immediately	May need aging
OMRI Listed	Yes (ours is)	No	Sometimes

Let's Talk About Your Operation

Whether you need a pallet of 50 lb bags or regular supersack deliveries, we'll figure out what makes sense for how you work.

Call Us Directly (816) 890-6750

Email for Pricing Send us a message

Schedule a Call Book time with Vik

We're in Grandview, MO (just outside Kansas City) at 14210 Norby Road. Come see the operation if you're in the area—we'll show you why this stuff works.