Free shipping on any 2+ items - Excludes Bulk

BuildASoil  |  SKU: WP101

#1 BuildASoil Worm Castings

Rated 4.9 out of 5
Based on 576 ratings
Regular price $32.00
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Size

Quality First

BuildASoil is committed to sourcing the highest quality ingredients you can trust. over 10,000 Five Star Reviews and over a decade in business

Delivery and Shipping

Shipping Policy

Shipping is expensive, and it gets more expensive almost every year. We are not going to pretend otherwise. What we can tell you is that we work hard to find the most reliable and affordable way to get your order to you, and we pass along free shipping wherever it makes sense.

Free shipping on any order with two or more items. The one exception is bulk items, meaning the large or heavy products that have to move by freight or oversized parcel. If your cart qualifies, free shipping is applied automatically at checkout.

Why two items and not a dollar amount?

Most stores set free shipping at a dollar threshold. That works when you sell light things like clothing. We don't. We ship soil, amendments, and heavy real goods that are expensive and awkward to move, so a dollar minimum doesn't reflect what shipping actually costs us.

We are a small business with no outside financial backing, and we are not Amazon. We manufacture, pack, and ship everything in house so we can control quality, which means real people picking, boxing, taping, and labeling every order, and that means real jobs. When we ship a single item for free, the only way to cover it is to raise prices across the board, and we would rather not do that. Asking for two or more items on free orders lets us keep prices lower for everyone and keep shipping sustainable. We hate high shipping costs as much as you do, and this is the fairest way we have found to keep them down.

Delivery estimates

Every product page shows an estimated delivery window based on current fulfillment and carrier schedules, so you know what to expect before you buy.

Shipping Options
BuildASoil Shipping Free
Transit: up to 10 business days Handling: ships within 2 business days

Free on eligible orders with two or more items. We select the carrier and method.

Standard Shipping Paid
Transit: 3 to 7 business days Handling: ships within 2 business days

Standard ground service.

Standard Shipping: Rushed Out the Door Paid, slightly more
Transit: 3 to 7 business days Handling: guaranteed

Order by noon MT on a business day and it ships the same day. Order after noon or on a weekend and it ships the next business day. If we miss that, we refund your shipping charge.

Get It Fast Higher
Transit: 2 to 3 business days Handling: guaranteed

Faster transit with the same handling guarantee as Rushed Out the Door.

Overnight It Highest
Transit: 1 business day Handling: ships ASAP

The fastest option we offer.

Pickup at Factory Store Free
Ready: within 24 hours Location: Montrose, CO

Bring your order confirmation and a valid ID.

FedEx Freight (Economy) Quoted
Transit: 2 to 9 business days

For large or heavy orders.

FedEx Freight (Priority) Quoted
Transit: 2 to 7 business days

For large or heavy orders, faster transit.

Rushed handling guarantee

If a Rushed Out the Door or Get It Fast order does not ship on time, we refund your shipping charge. You do not need to ask. Business days are Monday to Friday, not counting holidays. The guarantee covers when your order leaves our building. Transit times are carrier estimates.

Carriers

We ship with FedEx, UPS, and USPS, and we pick the carrier that gets your order to you reliably at the best cost. We cannot guarantee a specific carrier unless you arrange it with us ahead of time.

PO Boxes

Orders to PO Boxes often cost more and usually do not qualify for free shipping. Use a physical address to avoid delays and added fees.

Outside the Continental US

We ship to Alaska, Hawaii, Puerto Rico, Guam, the Northern Mariana Islands, and the US Virgin Islands. Free shipping generally does not apply to large or bulky items going to these destinations, though Hawaii and Alaska have more flexibility depending on carrier policy. Rates are quoted at checkout or on request.

Canada

We ship select items to Canada. Canadian customers need to choose "UPS Standard Shipping to Canada" at checkout so your order clears customs cleanly and you avoid surprise brokerage fees. Orders placed with other methods can be delayed or rejected at the border.

Vendor-Fulfilled Items

Some products ship directly from our vendor partners and show their own estimated ship dates on the product page. For questions about these, reach out through our contact page or the chat button on any page.

Freight Shipments

Freight orders arrive on pallets by box truck or semi. We assume you need liftgate service unless you tell us otherwise.

Inspect every freight shipment before you sign. Count the packages and check for damage. Signing the delivery receipt confirms the order arrived complete and undamaged, so note any problem on the receipt before you sign it.

Full Truckloads

Full truckload (FTL) orders are custom quoted after checkout based on your location, order volume, and how the truck will be unloaded.

  • Let us know if you have a dock, forklift, or other unloading equipment.
  • Tell us if you need liftgate or manual unload service.
  • Reach out through our contact page ahead of time for an FTL quote.
Order Tracking

We email tracking as soon as your order ships. If it does not arrive, check buildasoil.aftership.com with your order details, or reach out through our contact page.

Shipping Protection

This optional add-on at checkout covers your shipment against loss, theft, and damage, and we fast-track those claims for replacement or resolution. Even with protection, photos and documentation help us move carrier claims along faster.

Claims

Send all claims through our contact page. We do not process claims by phone.

Please report damaged or missing items as soon as you open your order, and no later than 30 days after delivery. Include:

  • A description of the issue
  • Photos of the box as it arrived and all packaging
  • Photos or video of the items you received, including any damage
  • A photo of the packing slip

Hold onto the packaging and any damaged items until the claim is resolved, since carriers may require an inspection.

Claim deadlines

  • Damage or missing items: within 30 days of delivery
  • Incorrect products: within 60 days of shipment
  • Lost or misdelivered packages: within 60 days of shipment
Once Your Order Leaves Our Facility

We help with every carrier claim we can. But once an order is in the carrier's hands, we cannot control delays, damage, or misdelivery, and the carrier makes the final call on claims.

Description

The castings we trust in our own soil recipes.

Fresh, consistent, and from one supplier with quality control we have relied on for years. We test them at Logan Labs so we know the chemistry integrates cleanly into a soil mix: high in calcium, low in chlorides and bicarbonates, plenty of nutrients without upsetting your balance. The biology is part of all good worm castings. The consistency is the hard part, and that is what we deliver.

★★★★★ 4.9 (556 reviews) • Tested at Logan Labs • 60 day money back guarantee
The trouble with most castings

Not all worm castings play nice in a recipe.

Castings are one of the most inconsistent inputs on the market. Two bags from the same brand can perform nothing alike, and the chemistry you cannot see is what quietly throws off a soil mix you worked hard to dial in. Here is what you are up against.

Inconsistent batch to batch

When every bag is different, you cannot build a repeatable recipe on top of it.

Hidden salts

High chlorides and bicarbonates can push your soil out of balance before you notice.

No analysis

Most brands never publish numbers, so you are trusting a label with nothing behind it.

Why growers trust ours

Fresh, consistent, and tested for your recipe.

We grow too, so we hold our castings to the standard we want in our own pots. We know the chemistry because we run it at Logan Labs, and we know the quality because it comes from one supplier we trust batch after batch.

Tested at Logan Labs

We check the chemistry that matters for mixing into soil, so you know exactly how these behave in a recipe.

High calcium, low chlorides and bicarbonates

Plenty of nutrients without the hidden salts that push a balanced soil mix off track.

Fresh and consistent

From one supplier with quality control we rely on, so every bag performs like the last.

Well screened and ready

Clean, black, and moist. Mixes into soil or brews into tea without the mess.

Do not take our word for it. See the Logan Labs analysis on these exact castings.

See the batch test results
Three simple ways to use them

Put them to work in your garden.

01

Compost tea

Add them to your brew for a rich, biologically active tea.

Just under 2 cups per 5 gallons of water (2.38% by volume)
02

Soil building

Mix into your potting soil recipe for vegetables and heavy feeding annual flowers.

15 to 20% of your total soil mix
03

Top dress

Layer on top anytime during the plant's life to keep the surface biology fed.

A 1 to 2 inch layer, applied liberally

New to compost tea? Read our full brewing guide.

Choose your size

Sized for the way you grow.

2 Gallon

Perfect for top dressing and small batches of tea.

1 Cubic Foot

Approximately 35 lbs. The go to for building a full soil mix.

Growing at scale? We offer castings by the yard and 2 yard sacks. See bulk sizing and pricing.

Grow with castings you can count on.

Order with confidence. If you are not happy within 60 days, we will make it right. Free shipping kicks in when you have two or more eligible items in your cart, including these castings.

Questions before you buy? Our whole team grows, so reach out by chat, email, or phone and we will help you get it right.

Backed by our 60 day 100% satisfaction guarantee

Specifications

  • Length (in)
    11
  • Width (in)
    5.75
  • Height (in)
    5

Questions?

We are here to help and our entire staff knows how to grow. Just reach out via chat, email or even phone. We are passionate about growing and want you to succeed.

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • USDC
  • Venmo
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

average rating 4.9 out of 5
Based on 576 ratings
  • 5 Stars
    550 Reviews
  • 4 Stars
    18 Reviews
  • 3 Stars
    4 Reviews
  • 2 Stars
    1 Review
  • 1 Star
    3 Reviews
98% of reviewers would recommend this product to a friend
576 Reviews
Reviewed by Kyle
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

Always a great product

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Reviewed by Mark V.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

So far so good

Looks really nice. I just started using it no problems here

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Reviewed by Mark
I recommend this product
Rated 5 out of 5
Review posted

5 Stars

black and good

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Reviewed by Eric J.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

As expected

Free delivery has improved in speed. Best worm casting I've experienced. Have not tried "Colorado casting company",yet.

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Reviewed by DON L.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Worm Castings

Fair price, fast shipping, great quality. Will definitely be doing business with you again.

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Rated 4.9 out of 5
Based on 576 ratings