Company lists · Data refreshed September 2026

Top 25 Organic soil amendment manufacturers based in the United States

Name: Organic soil amendment manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 486 companies tracked

RevenueBase identified 486 company matches for organic soil amendment manufacturers associated with the United States as of September 2026 and tracks 4,235 professional contacts across them, including 1,544 with verified work emails. Houston is the largest hub.

This list covers company matches for organic soil amendment manufacturers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

486Companies

4,235Contacts tracked

1,544Verified emails

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The 25 largest organic soil amendment manufacturers based in the United States

Ranked by team size

Top 25 of 486 company matches for organic soil amendment manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	SUN GRO Horticulture	Exact match	Agawam, MA, United StatesHQ recorded Sep 17, 2026	501-1,000	344 contacts →
	Exact match “About Us Sun Gro Horticulture is one of the most prominent North American horticultural companies, employing over 800 staff and serving customers worldwide.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Harrell's LLC	Exact match	Lakeland, FL, United StatesHQ recorded Sep 17, 2026	201-500	310 contacts →
	Exact match “Harrell’s is a leading producer of quality custom blended fertilizers and distributor of plant protectants and biocontrols for golf course, turf & landscape, specialty ag, sports…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Advanced Nutrients	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 17, 2026	51-200	198 contacts →
	Exact match “Advanced Nutrients is an international marketer and manufacturer of agricultural, home & garden, hydroponics fertilizers, and plant nutrients.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Kellogg Garden Products	Exact match	Carson, CA, United StatesHQ recorded Sep 17, 2026	51-200	110 contacts →
	Exact match “Founded in 1925 by H.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Agrinos	Exact match	Davis, CA, United StatesHQ recorded Sep 17, 2026	51-200	95 contacts →
	Exact match “Agrinos, An American Vanguard Company, is a biological crop input provider committed to improving the productivity and sustainability of modern agriculture worldwide.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	American Plant Food Corporation	Exact match	Galena Park, TX, United StatesHQ recorded Sep 17, 2026	51-200	70 contacts →
	Exact match “Since 1964, American Plant Food has been providing the high-quality blends, inputs, and services required for healthy soil, as well as the knowledge growers need to achieve…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Turf Care Supply, LLC	Exact match	Brunswick, OH, United StatesHQ recorded Sep 17, 2026	201-500	66 contacts →
	Exact match “Turf Care Supply, LLC is the leading manufacturing and product innovator to the professional green industry since 1974.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Midwestern Bioag	Exact match	Blue Mounds, WI, United StatesHQ recorded Sep 17, 2026	51-200	64 contacts →
	Exact match “Midwestern BioAg manufactures and distributes fertilizers that build soil health while increasing yields and nutritional quality of both food and forage.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Silver Creek Materials	Exact match	Fort Worth, TX, United StatesHQ recorded Sep 17, 2026	51-200	63 contacts →
	Exact match “Silver Creek Materials is a mining and composting operation in West Fort Worth, Texas.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	HUMA	Exact match	Gilbert, AZ, United StatesHQ recorded Sep 17, 2026	51-200	55 contacts →
	Exact match “Inspired by one of earth’s most precious resources, humus, we harness the power of ancient sunlight to vitalize life in the soil, crops and water.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Foxfarm Soil & Fertilizer Company	Exact match	Samoa, CA, United StatesHQ recorded Sep 17, 2026	51-200	52 contacts →
	Exact match “At FoxFarm Soil & Fertilizer Company, we are passionate about producing the finest soil mixes, fertilizers, and micro-brewed liquid plant foods.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Back To The Roots, INC	Exact match	Oakland, CA, United StatesHQ recorded Sep 17, 2026	11-50	51 contacts →
	Exact match “Back to the Roots is an organic gardening company founded by Nikhil Arora and Alejandro Velez.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Nitricity	Exact match	Fremont, CA, United StatesHQ recorded Sep 17, 2026	11-50	51 contacts →
	Exact match “Let's Grow Together” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	AGRX	Exact match	Oxnard, CA, United StatesHQ recorded Sep 17, 2026	51-200	46 contacts →
	Exact match “AG RX is the leading independent supplier of traditional and organic crop protection and nutrient products.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	JH Biotech, INC	Exact match	Ventura, CA, United StatesHQ recorded Sep 17, 2026	51-200	44 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Garick We ARE Nature's Helper	Exact match	Cleveland, KS, United StatesHQ recorded Sep 17, 2026	201-500	43 contacts →
	Exact match “For over four decades, Garick has been a trusted name in distributing and processing renewable natural resource products across the U.S.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Coast Of Maine Organic Products, INC	Exact match	Portland, ME, United StatesHQ recorded Sep 17, 2026	51-200	40 contacts →
	Exact match “Coast of Maine Organic Products was founded in 1996 with the simple idea that a healthy planet needs healthy soil to sustain life.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	The Ground UP	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 2026	11-50	35 contacts →
	Exact match “Founded in 1994, The Ground Up (TGU) began with a simple goal: to supply the industry with the finest quality mulches and soils.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Agromin	Exact match	Oxnard, CA, United StatesHQ recorded Sep 17, 2026	51-200	34 contacts →
	Exact match “Agromin, with facilities throughout California, manufactures earth-friendly soil products for farmers, government entities, landscapers and gardeners.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Jobe's Company	Exact match	Waco, TX, United StatesHQ recorded Sep 17, 2026	201-500	34 contacts →
	Exact match “The Jobe’s Company is a leading marketer and producer of branded gardening products, offering fertilizers, landscape fabrics and sustainable organic solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Pearl Valley Farms	Exact match	Pearl City, IL, United StatesHQ recorded Sep 17, 2026	51-200	33 contacts →
	Exact match “Pearl Valley Farms is a global food and lawn & garden company, specializing in organic and specialty products.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Bio-Gro, INC	Exact match	Mabton, WA, United StatesHQ recorded Sep 17, 2026	11-50	30 contacts →
	Exact match “For 30 years Bio-Gro Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	The Organic Recycler	Exact match	Forest Hill, TX, United StatesHQ recorded Sep 17, 2026	51-200	30 contacts →
	Exact match “The Organic Recycler recycles organic landscape waste into mulch, compost, and blended soils.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Pittmoss	Exact match	Ambridge, United StatesHQ recorded Sep 17, 2026	11-50	30 contacts →
	Exact match “PittMoss produces next-generation gardening amendments and mixes.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	St. Louis Composting	Exact match	Valley Park, MO, United StatesHQ recorded Sep 17, 2026	51-200	28 contacts →
	Exact match “As any seasoned gardener or landscaper knows, the most important thing you can do to enhance a lawn or garden is to cultivate better soil.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “organic soil amendment manufacturers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 486 organic soil amendment manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 1,544 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Organic soil amendment manufacturers based in the United States at a glance

As of Sep 17, 2026

36.5%Verified-email coverage

8.7Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

250

11-50

172

51-200

201-500

501-1,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 486 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “organic soil amendment manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every displayed company carries at least one verified work email. RevenueBase tracks 1,544 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “organic soil amendment manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many organic soil amendment manufacturers are there based in the United States?

RevenueBase identified 486 company matches for organic soil amendment manufacturers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

SUN GRO Horticulture tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most organic soil amendment manufacturers?

Houston leads with 8 company records, followed by Dallas (7) and Denver (6).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,544 professional contacts with verified work emails tracked across these 486 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.