Reviewed by Jason
I recommend this product
5 Stars
As advertised!
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Farm Fuel | SKU:
PGM103
Mustard Seed Meal
Rated 4.9 out of 5
$45.00
Unit price
/
Unavailable
Shipping calculated at checkout.
Mustard Seed Meal - 10 lb (Milled) is backordered and will ship as soon as it is back in stock.
Quality First
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
Delivery and Shipping
BuildASoil Shipping Policy
At BuildASoil, we’re committed to providing the most affordable and reliable shipping possible—for both our customers and our business. We continuously evaluate and improve our fulfillment process to ensure faster, smoother deliveries. We know shipping is often a pain point in shopping online, and our goal is to make it feel painless. For full details, please read the complete policy below.
Notice: Each product page displays accurate estimated delivery windows based on real-time fulfillment and carrier schedules.
📦 Shipping Options
- BuildASoil Shipping: Our complimentary shipping method for qualifying orders. We choose the most cost-effective carrier and shipping method. Delivery may take up to 10 business days. Most items qualify when you purchase two or more eligible products. Some qualify individually.
-
Standard Shipping: A paid option where we ship using standard ground services.
- Standard Shipping: Rushed Out the Door! Includes everything in Standard Shipping, but adds on same day order processing (not guaranteed).
- Get It Fast: Our expedited service. Orders are shipped with 2-3 day transit times and are prioritized for fulfillment, with most leaving the same business day (not guaranteed).
- Overnight It: Ships via overnight service with immediate fulfillment for urgent deliveries.
- FedEx Freight (Economy or Priority): For large or heavy orders. All freight ships via FedEx Freight unless arranged otherwise. Contact us in advance if no liftgate is required.
- Pickup at Factory Store – Available Within 24 Hours! Select this option to pick up your order at our factory store. We'll notify you when it's ready. Bring your order confirmation and a valid ID.
| Option | Cost | Transit Speed | Fulfillment Speed | Notes |
|---|---|---|---|---|
| BuildASoil Shipping | Free | Up to 10 business days | Standard | Free on any eligible items; ships at our discretion |
| Standard Shipping | Paid | 3-7 business Days | Standard | Standard handling and transit |
| Standard Shipping: Rushed Out the Door! | Paid (slightly more) | 3-7 business Days | Same Day | Fast handling out the door with standard transit |
| Get It Fast | Higher | 2–3 business days | Same Day | Fast handling and transit |
| Overnight It | Highest | 1 business day | ASAP | Fastest possible option |
| Pickup at Factory Store | Free | N/A | Ready In 24hrs | Local pickup option |
| FedEx Freight Economy | Varies by order | 2–9 business days (varies) | Varies | For large or heavy orders |
| FedEx Freight Priority | Varies by order | 2–7 business days (faster) | Varies | For large or heavy orders |
🚚 Carriers Used
We ship with FedEx, UPS, and USPS. Carrier preference is not guaranteed unless explicitly communicated to us.
📮 PO Boxes
Orders shipped to PO Boxes often require additional costs and are not eligible for free shipping. Use a physical address to avoid delays and fees.
🏝️ Outside Continental US
We ship to Alaska, Hawaii, Puerto Rico, Guam, Northern Mariana Islands and the U.S. Virgin Islands. Free shipping generally does not apply to large or bulky items shipped to these locations. Hawaii and Alaska do have more flexibility with this due to carrier policies. Quotes will be calculated at checkout or by request.
🇨🇦 Canada Orders
We do ship to Canada for select items. Canadian customers must choose “UPS Standard® Shipping to Canada with no Surprises!” at checkout to ensure proper customs clearance and avoid unexpected brokerage fees or delays. Orders using other methods may be subject to delays or rejection at customs.
🏭 Vendor-Fulfilled Items
Some products are fulfilled by vendor partners and display estimated ship dates on their product pages. Questions about these items should be sent to support@buildasoil.com.
🚛 Freight Shipments
Freight deliveries involve pallets via box trucks or semis. Liftgate service is assumed unless specified otherwise.
Important: Inspect all freight shipments before signing. Count and examine all packages. Signing the delivery receipt confirms that the order arrived in full and undamaged.
🚛 Full Truckloads
Orders that qualify for full truckload (FTL) delivery will be custom quoted after checkout. Rates are based on location, order volume, and unloading requirements.
- Indicate if you have a dock, forklift, or unloading equipment.
- If you need liftgate or manual unload service, please notify us.
- Contact support@buildasoil.com in advance for FTL quotes.
🔍 Order Tracking
Tracking information is emailed upon shipment. If not received, visit buildasoil.aftership.com and enter your order details. For help, contact support@buildasoil.com.
🛡️ Shipping Protection
This low-cost optional add-on at checkout insures your shipment against loss, theft, and damage. Claims are fast-tracked for resolution or replacement.
Even with protection, we encourage submitting photos, videos, and documentation to assist our carrier claims process.
📋 Claims Policy
All claims must be submitted via support@buildasoil.com. Phone-based claims are not accepted.
Required Documentation:
- Issue description
- Photos/videos of damage, missing or incorrect items
- Images of packaging and labels
Do not discard packaging or damaged items—carriers may require inspection.
Claim Deadlines
- Damage / Missing Items: Within 5 business days of delivery
- Incorrect Products: Within 30 days of delivery
- Lost or Misdelivered Packages: Within 30 days of shipment
⚠️ Responsibility Disclaimer
Once an order leaves our facility, we are not liable for delays, damage, or misdelivery caused by the carrier. We assist with claims but final decisions rest with the carrier.
We have zero tolerance for mistreatment of delivery drivers. Verified misconduct may result in cancellation and refund of your order minus shipping costs.
Description
Description
BuildASoil's Favorite Mustard Seed Meal Fertilizer is approved for organic production. Our fertilizer is rich in natural plant nutrients and amino acids. Its formulation is 100% plant-derived allowing for a unique organic composition that selects for beneficial microbes in the soil. This, coupled with its highly bioavailable nutrient profile drastically improves crop nutrient uptake and therefore overall crop performance. There are no additives or preservatives used during manufacturing. This creates a unique, high-quality product that goes unmatched in the marketplace.
BENEFITS
- Fertilizer (NPK 4.50-1.50-1.15)
- Sourced from non-GMO seed
- Great source of organic material in your garden
- Easy to use and safe to handle
- Suitable for conventional and organic farms and gardens
- Enhanced soil biology
- High in Sinigrin Glucosinolate
Powder Or Pellets?
We plan on using Pellets for soil mixing and powder anytime even coverage is needed across the soil surface. Read more about the powder vs pellets below.
See Sample Testing for Heavy Metals Here
Caution:
- Can be harmful to young seedlings, be careful.
- Worms will move away from mustard meal when top dressed and if they can't move away it will be toxic to them.
- This stuff is potent and we are still learning, so proceed with caution if you are going to go hard.
White Papers On Using Mustard Seed:
Effectiveness of Defatted Mustard Meals Used to Control Fungus Gnats
Mustard Seed Meal for Management of Root-knot Nematode and Weeds in Tomato Production
Using High Glucosinolate Mustard as a Cover Crop to Reduce Weeds and Disease
Biologically Active Compounds in Mustard Seeds: A Toxicological Perspective
PELLETS vs. MILLED
Mustard Seed Meal Fertilizer is available in two different forms: Pelleted and Milled. Each of the two forms are from the exact same formulation, but have different uses and benefits.
PELLETS
Mustard Seed Meal Pellets are best used in applications where a slow release of fertilizer is desired. The pellets are less distributed throughout the soil and therefore break down at a slower rate. This is ideal for situations where long-lasting, slow release fertilizer is desirable. Application can be done by hand, or by pellet spreader/injector. The pellets are strong and hold together well, minimizing breakage in mechanical spreaders. In most cases, this is the most desirable form for top- or side-dressing, potted horticulture and backyard gardeners.
MILLED
Milled Mustard Seed Meal Fertilizer is simply a result of grinding and crushing the pellets into a powder-like consistency. When applied to the soil, Milled is better distributed throughout the soil profile. This allows for a more uniform availability and quicker release of nutrients. It is also more rapidly consumed by microorganisms, quickly creating a healthy living soil. It is best applied by hand or by a drop spreader (mulch/compost spreader). Careful consideration should be taken while using mechanized spreaders as the material has a high oil content that may cause clumping or clogging of machinery. It is best spread during days with mild temperatures and low humidity to avoid clumping. Milled is recommended for most pre-plant applications on the farm, garden, or container growing. As always, be sure to allow for a minimum three-week plant back with all pre-plant applications.
Applications of Mustard Seed Meal selects for specific bacterial and fungal communities in the soil. These specific communities work to improve nutrient availability for the crop, reduce plant stress, increase plant vigor, and improve yields. Scientists nation-wide have reported a consistent promotion of soil fungal and bacterial communities containing Trichoderma spp., Streptomyces spp., Pseudomonas spp., Anthrobotrys spp., Plectosphaerella cucumerina, Dactylella oviparasitica, Paecilomyces lilacinus and many more. Each of these beneficial microbes play a crucial role in the complex interaction occurring between soil and roots creating a long-lasting symbiotic relationship that aids in the enhanced production and protection of crops.
Check out the activity after adding to our in store worm bin! All the gnats are gone now too.
Reviews (117)
Reviews (117)
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Based on 117 reviews
91%
of reviewers would recommend this product to a friend
Customer photos and videos
117 Reviews
Reviewed by Martin M.
Verified Buyer
I recommend this product
Found my new love....
Not sure why, but this stuff causes a great amount of micorrizia to form, or possibly it is fungal. But the plants love it. So far when top dressing and digging it in an inch or so it hasn't caused any burn problems. Top dressed my cucumbers and they greened right up. They are in an earth box and are running out again so I will be adding more. Along with some of the ProMix.
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Reviewed by Scott P.
Verified Buyer
I recommend this product
Little helper
I’ve been using the mustard seed for about 2 1/2 to 3 years now both indoor and outdoor I haven’t gotten any unwanted bugs so I assume it’s doing its job and I’ll take anything that will help against unwanted pests.
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Reviewed by Paul H.
Verified Buyer
I recommend this product
Used it everywhere
Not only did I used it with my indoor plants but I used it in my two orchards as well. First my lower orchard with seemingly great response and then next my upper orchard. Could be a coincidence but I’ve noticed less pest issue and more green healthy growth. Just even intuitively something about this product feels powerful. I was hoping to get a repelling effect towards animals like voles, rabbits, and javalina it’s still too early to tell though for sure though.
I’d recommend.
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Reviewed by Jerome A.
Verified Buyer
I recommend this product
MSM
Good stuff. Pair it with the other product Build a Soil sells and you'll never have gnats.
But the MSM works well alone. Adds a positive soil enhancement also.
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