Big Roots Microbe Friendly Soil by The Soil King in 1.5 Cu. Feet Bag
Big Rootz Potting Soil by The Soil King in 40 Cubic Foot Bag
Big Rootz Soil by The Soil King Information Sheet
Big Rootz Potting Soil by The Soil King
Big Roots Microbe Friendly Soil by The Soil King in 1.5 Cu. Feet Bag
Big Rootz Potting Soil by The Soil King in 40 Cubic Foot Bag
Big Rootz Soil by The Soil King Information Sheet
Big Rootz Potting Soil by The Soil King

Big Rootz By The Soil King Designed By Growers For Growers

$34.00
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Big Rootz® Potting Soil – Totes Ready to Ship Today!

Elevate your garden to the next level with Big Rootz® Potting Soil, the premium all-purpose soil designed for professional agriculture and perfect for home gardeners, organic growers, and commercial farmers. Trusted for its proven results, Big Rootz® focuses on what matters most: the health of your roots.

Why Big Rootz® is the #1 Choice for Growers

Developed by Patrick King, owner of Soil King Garden Center, Big Rootz® represents over 20 years of research and innovation. Carefully formulated with the purest soil amendments and mycorrhizae, it provides a microbe-friendly foundation to promote healthier, stronger plants.

Unlike sub-par soils that leave your plants vulnerable to pests, rot, and nutrient deficiencies, Big Rootz® is enriched with everything your plants need to thrive. It’s the soil designed by gardeners, for gardeners, delivering professional-grade results for all growers.

Key Features & Benefits

✅ Backed by decades of research and refinement.
✅ Designed by growers for growers, ensuring high performance.
✅ Blended in the USA with premium quality ingredients.
✅ Pesticide, heavy metal, and GMO tested, for a safe and sustainable choice.
✅ Infused with mycorrhizae to maximize root health and nutrient absorption.
✅ Microbe-friendly, promoting a thriving soil ecosystem.

Rigorously Tested for Exceptional Quality

At Soil King, quality is our promise. Big Rootz® undergoes stringent quality assurance testing, ensuring that every tote contains only the best natural and organic materials. This makes it the trusted choice for growers who value clean, effective, and sustainable growing mediums.

Perfect for Any Growing Environment

Big Rootz® is versatile and ideal for use:

  • Indoors or outdoors.
  • In garden beds, greenhouses, or large-scale farms.
  • As a standalone soil or combined with other growing mediums.

Don’t wait—your plants deserve the best! Order your Big Rootz® tote today and see the difference healthy roots make in growing your strongest, most vibrant plants yet.

Totes are ready to ship now—get yours and grow with confidence!

  • 5 stars: 18 (95%)
  • 4 stars: 1 (5%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
J
Justin Glidewell

The best soil hands down plants love it

Thank you so much for the fantastic review! It is great to hear that your plants are thriving in the Big Rootz soil.

We take a lot of pride in offering products designed by growers, for growers, and there is nothing better than hearing 'best soil hands down' from someone in the community. We really appreciate you sharing your success and for choosing a product that prioritizes quality and performance.

Happy growing!

The Rocky Mountain BioAg® Team

G
Gina Allen

Freaking awesome grow medium for all potted plants.

Thanks for the 'freaking awesome' feedback! There is nothing better than hearing from growers who appreciate the work The Soil King puts into every bag.

It’s great to hear Big Rootz is hitting the mark for your potted plants, it really is designed to take the guesswork out of the grow so you can focus on the results.

Happy planting, and may your roots always be big!

The Rocky Mountain BioAg® Team

D
Devil Cabbage

Excellent Product-Even better Customer Service. Highly recommend Big Rootz (and Baby Rootz). If You cannot find it local this is the place to purchase

Thank you so much for the kind words and 5-star review! We’re thrilled to hear you’ve had such a great experience with Big Rootz and Baby Rootz. It means a lot to know the product delivered for you, and even more to hear our customer service made the difference. We truly appreciate your recommendation and your support of Rocky Mountain BioAg®.

Make it a great day!
Rocky Mountain BioAg® Team

G
Guy C.
Big Rootz soil

compared to other soils BIG Rootz out performs all the ones i have used. Bigger faster growing plants are the results i have seen. Try it and you will be amazed.

Thank you for sharing your results! :seedling: We’re thrilled Big Rootz is giving you those bigger, faster‑growing plants. Keep us posted on your progress—and if you snap any photos, we’d love to see the garden in action. Happy growing!

D
David K.
Best soil for organic no-till

The soft decaying redwood in the mix is unmatched. Soil feels so good to the touch. Strong water retention.

Thank you so much for your kind words and for choosing Rocky Mountain BioAg:registered:! We're thrilled to hear that you're enjoying Big Rootz, especially the soft decaying redwood and its strong water retention properties.
It's always our goal to carry products that not only perform well but also feel great to use. Your feedback reassures us that we're on the right track.
We look forward to serving you again soon! If you have any questions or need further assistance, please don't hesitate to reach out.
Best regards,
The Rocky Mountain BioAg:registered: Team

M
Mike G.
Love the big roots from

Love the big roots from Rocky mountain bio and liquid food is dynamite. Thank you Brandon and Matt.

Thank you so much for your wonderful feedback! We're thrilled to hear that you love the Big Rootz and that Microbe Manna has made such a positive impact. We truly appreciate your business and look forward to serving you again soon!

M
Michael B.
Soil king Big Roots.

Excellent customer service.

Great to hear that our team provided excellent customer service on your order of Big Rootz! Thank you for your business, we look forward to serving you again soon!

T
Treyvon A.
EVERYTHING I EXPECTED

EVERYTHING I EXPECTED

Great to hear that Big Rootz is what you were looking for and we were able to provide it to you! Thanks for your business, we look forward to serving you again soon!

M
Mike G.
Hey Brandon, Michael here just

Hey Brandon, Michael here just saying big rootz is the bomb just like you said. I thank you and can't wait to get your other growing products. Thanks.

Great to hear that Big Rootz is working so well for your needs! The super soil does not disappoint, best on the market hands down. Thanks for the business, we look forward to serving you again soon!

A
Alessio D.
Plants love it.

I used this product for 2 years and I never had a problem.

Great to hear that Big Rootz is working so well for your needs! We appreciate the continued support and look forward to serving you again soon!

A
Alessio D.
Big Rootz

I have used Big Rootz and Baby Big Rootz for 3 years. I never had any problems with this product and it lasts a long time.

Great to hear that Baby and Big Rootz works so well for your needs! We appreciate your business and look forward to serving you again soon!

K
Kris P.
Great product

Great soil and quick delivery

Happy to hear that you lover Big Rootz soil as much as we do! Thank you for the business, we look forward to serving you again soon!

J
Joshua G.
Great stuff

Will be back in

Big Rootz is the best bagged and bulk soil that there is on the market today hands down! Happy that you feel it is great stuff also! Thank you for your business, we look forward to serving you again soon.

J
Jeffrey E.
I love soil

This soil works great. Use it for all my planting needs.

Great to hear that Big Rootz is working as well for you as it does for us! We absolutely love this soil and the pure ingredients that it is made with! The Soil King has done his homework, look at the competitors and you will quickly see the difference! Thanks for your business, we look forward to serving you again soon!

C
Casey M.
Big Roots Soil from Rocky Mountain Bio-ag

Big Roots Soil is definitely my favorite soil on the market & Rocky Mountain Bio Ag definitely have the best prices goin on it! Besides the Big Roots & afew amendments I used in my soil the only other stuff my girls have had was the Quantum Organic Total & Microbe Manna also both from Rocky Mtn Bio Ag! My girls are rocking tho & so is Rocky Mtn Bio Ag's customer service! ANY questions or problems u have they will solve them for u asap! They sure have helped me with any & every question I ever asked! Thank you Rocky Mtn Bio Ag for everything! I will send more pics once my girls are done!

Great to hear that The Soil King soils, Quantum Growth Microbes and Microbe Manna is keeping you growing healthy and strong! Simple systems create outstanding results! Also, great to hear that our customer service is on point and that you get your questions answered quickly and thoroughly! Thank you for your continued support, we look forward to serving you again soon!

M
Marcus M.
Soil kings “big roots”

Great soil from the get go. I will be using it as “rols” or recycled organic living soil for the life. High quality inputs for serious growers.

Great to hear that you love Big Rootz as much as we do! Definitely a soil that you can use as 'ROLS'! That is why we love The Soil King only the highest quality purest inputs for the absolute best growth! Thanks for your business, we look forward to serving you again soon!

B
Billye B.
A++

Top the line....love it

Great to hear that you love your Big Rootz! You are 100% right top of the line. Thank you for your business!

E
Erick G.
Great product.

Great product.

We love Big Rootz soil as well, haven't found a soil on the market that even comes close in quality and consistency! Thank you for your business!

C
Casey M.
Big Roots Soil from Rocky Mountain Bio-ag

I of course was 100% satisfied with my Big Roots Soil but i was also 100% satisfied with how quick you guys got it out & to me!!! Much quicker than Amazon & also cheaper so i really appreciate yall especially since i live in Ashland, Ky where u cant buy a bag of decent soil for any amount of money! So thank yall soooo much!

Great to hear that our shipping team got your soil out to you quickly and that you are 100% satisfied! We strive to ship same day so our customers get their items very quick! Thank you for your business!

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