Company lists · Data refreshed September 2026

Top 25 Organic fertilizer manufacturers based in the United States

Name: Organic fertilizer 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 258 companies tracked

RevenueBase identified 258 company matches for organic fertilizer manufacturers associated with the United States as of September 2026 and tracks 2,038 professional contacts across them, including 743 with verified work emails. Denver is the largest hub.

This list covers company matches for organic fertilizer 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

258Companies

2,038Contacts tracked

743Verified emails

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The 25 largest organic fertilizer manufacturers based in the United States

Ranked by team size

Top 25 of 258 company matches for organic fertilizer 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	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
2	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
3	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
4	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
5	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
6	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
7	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
8	Prince Corporation	Exact match	Marshfield, WI, United StatesHQ recorded Sep 17, 2026	201-500	38 contacts →
	Exact match “Supporting the needs of independent retailers for over 100 years!” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	MID Valley Agricultural Services, INC	Exact match	Oakdale, CA, United StatesHQ recorded Sep 17, 2026	201-500	37 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	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
11	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
12	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
13	Jack's Fertilizers	Exact match	Allentown, PA, United StatesHQ recorded Sep 17, 2026	11-50	25 contacts →
	Exact match “JR Peters, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Peaceful Valley Farm & Garden Supply	Exact match	Grass Valley, CA, United StatesHQ recorded Sep 17, 2026	51-200	24 contacts →
	Exact match “We're the largest independent U.S.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Mears Fertilizer INC	Exact match	El Dorado, KS, United StatesHQ recorded Sep 17, 2026	11-50	22 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Diamond R Fertilizer	Exact match	Fort Pierce, FL, United StatesHQ recorded Sep 17, 2026	501-1,000	21 contacts →
	Exact match “Diamond R Fertilizer was originally founded by the Roper family in Winter Garden, Florida in 1943.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Envirokure, Incorporated	Exact match	Hicksville, OH, United StatesHQ recorded Sep 17, 2026	11-50	20 contacts →
	Exact match “It’s our vision to develop sustainable solutions that support farmers as they responsibly and profitably produce enough food to feed the world.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	NEW Country Organics	Exact match	Waynesboro, VA, United StatesHQ recorded Sep 17, 2026	11-50	20 contacts →
	Exact match “New Country Organics is an organic animal feed manufacturer and homestead supply company with feed mills and warehouses in Waynesboro, Virginia and Lubbock, West Texas.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	The Espoma Company	Exact match	Millville, NJ, United StatesHQ recorded Sep 17, 2026	11-50	19 contacts →
	Exact match “Since 1929, The Espoma Company has been the pioneer in organic gardening.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Return	Exact match	Stewartville, MN, United StatesHQ recorded Sep 17, 2026	11-50	19 contacts →
	Exact match “Return helps move nutrients smarter.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Purple COW Organics, LLC	Exact match	Middleton, WI, United StatesHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match “The quality of the food we eat and plants we grow is directly related to the quality of the soil in which it is grown.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Grower's Secret, INC	Exact match	Antioch, CA, United StatesHQ recorded Sep 17, 2026	11-50	14 contacts →
	Exact match “Grower's Secret, Inc is based in Antioch, CA, and Honolulu, HI, with R&D Lab in Honolulu, HI, warehouses in Kent, WA, and Tampa, FL, and admin offices in Antioch, CA.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Vermont Compost Company INC	Exact match	Montpelier, VT, United StatesHQ recorded Sep 17, 2026	1-10	12 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Nelson Plant Food	Exact match	Bellville, TX, United StatesHQ recorded Sep 17, 2026	11-50	11 contacts →
	Exact match “Nelson Plant Food is the insider's resource for the best fertilizer and plant food products available, all at a wholesale price.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Dr. Earth Company	Exact match	Winters, CA, United StatesHQ recorded Sep 17, 2026	51-200	11 contacts →
	Exact match “Human and Environmental health through Gardening is our passion.” 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 fertilizer 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 258 organic fertilizer manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 743 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Organic fertilizer manufacturers based in the United States at a glance

As of Sep 17, 2026

36.5%Verified-email coverage

7.9Average contacts per company

1-10Median size (employees)

1.9%Largest-city concentration · Denver

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

129

11-50

51-200

201-500

501-1,000

1,001-5,000

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 258 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 fertilizer 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 743 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 fertilizer manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 258 company matches for organic fertilizer 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?

Harrell's LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most organic fertilizer manufacturers?

Denver leads with 5 company records, followed by Miami (4) and Portland (4).

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 743 professional contacts with verified work emails tracked across these 258 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.