Company lists · Data refreshed September 2026
Top 25 Arboretum foundations based in the United States
RevenueBase identified 633 arboretum foundations headquartered in the United States as of September 2026 and tracks 12,377 professional contacts across them, including 4,450 with verified work emails. Washington is the largest hub.
This list covers arboretum foundations headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest arboretum foundations based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 635 contacts → | ||||
Indirect evidence “Adventure.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 616 contacts → | ||||
Indirect evidence “The New York Botanical Garden has been a connective hub among people, plants, and the planet since 1891.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 540 contacts → | ||||
Indirect evidence “In 1906, industrialist Pierre du Pont (1870-1954) purchased a small farm near Kennett Square, PA, to save a collection of historic trees from being sold for lumber.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 516 contacts → | ||||
Indirect evidence “Founded in 1859 by philanthropist Henry Shaw, the Missouri Botanical Garden is one of the nation's oldest botanical gardens in continuous operation and a National Historic…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 382 contacts → | ||||
Partial evidence “The Morton Arboretum is an internationally-recognized botanical garden and tree research center in Lisle, Illinois.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 304 contacts → | ||||
Indirect evidence “Celebrating it's 75th anniversary in 2026, Denver Botanic Gardens is considered one of the top botanical gardens in the United States and a pioneer in water conservation.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 273 contacts → | ||||
Indirect evidence “Since 1926, Monrovia has selected and grown the healthiest, highest quality, and best performing plants for your landscape.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 247 contacts → | ||||
Indirect evidence “The Atlanta Botanical Garden is among the top tier of cultural attractions in Atlanta and Gainesville, Georgia.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 229 contacts → | ||||
Indirect evidence “Founded in 1910, Brooklyn Botanic Garden (BBG) is an independent nonprofit institution committed to education, research, and the display of horticulture.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 166 contacts → | ||||
Partial evidence “The Dallas Arboretum, one of the most beautiful outdoor attractions in Dallas, features 66 acres of spectacular display gardens that showcase incredible seasonal flowers…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 156 contacts → | ||||
Partial evidence “Holden Forests & Gardens is made up of two of Northeast Ohio’s most important environmental and cultural institutions, the Holden Arboretum and Cleveland Botanical Garden, whose…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 154 contacts → | ||||
Indirect evidence “Riverbanks Zoo and Garden is home to more than magnificent and fascinating animals and one of America's best public gardens.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 144 contacts → | ||||
Indirect evidence “Fairchild Tropical Botanic Garden is a 83 acre botanic garden located in Coral Gables, FL.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 143 contacts → | ||||
Indirect evidence “Franklin Park Conservatory and Botanical Gardens is a premier botanical landmark and cultural attraction featuring exceptional plant collections and gardens, seasonal art- and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 136 contacts → | ||||
Indirect evidence “Founded in 1875, American Forests is the oldest national nonprofit conservation organization in the U.S.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 135 contacts → | ||||
Indirect evidence “Founded in 1893, Phipps Conservatory and Botanical Gardens in Pittsburgh, Pa.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 134 contacts → | ||||
Indirect evidence “Gilroy Gardens Family Theme Park is a 501(c)(3) nonprofit corporation and California’s only horticultural theme park.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 112 contacts → | ||||
Indirect evidence “Enjoy the captivating beauty of Fort Worth Botanic Garden (FWBG) and Botanical Research Institute of Texas (BRIT), one of the largest centers for botanical exploration and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 112 contacts → | ||||
Indirect evidence “Lewis Ginter Botanical Garden’s mission is education and our passion is connecting people and plants to improve communities.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 112 contacts → | ||||
Indirect evidence “Founded in 1875, the Buffalo Zoo is the third oldest zoo in the United States.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 111 contacts → | ||||
Indirect evidence “Founded in 1985 by Central Atlanta Progress, the Junior League of Atlanta, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 105 contacts → | ||||
Indirect evidence “Through research, technology, and education, the International Society of Arboriculture (ISA) promotes the professional practice of arboriculture and fosters a greater worldwide…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 88 contacts → | ||||
Indirect evidence “The University of Texas at Austin's Lady Bird Johnson Wildflower Center inspires the conservation of native plants through its gardens and education, research and outreach…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 77 contacts → | ||||
Indirect evidence “The 118-acre Huntsville Botanical Garden is open year-round and contains a diverse ecosystem of meadows, upland and bottomland forest, and wetlands, as well as a variety of…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 76 contacts → | ||||
Partial evidence “Greenacres Foundation is a non-profit, private operating foundation established in 1988 by Louis and Louise Nippert.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: arboretum foundations. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names arboretum foundations.
- Partial evidence
- Its own public description names part of arboretum foundations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name arboretum foundations. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 633 arboretum foundations based in the United States
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Arboretum foundations based in the United States at a glance
As of Sep 19, 2026Companies by employee count
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 633 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among arboretum foundations, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “arboretum foundations”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names arboretum foundations), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among arboretum foundations, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 4,450 across the full list. 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 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names arboretum foundations, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many arboretum foundations are there based in the United States?
RevenueBase identified 633 arboretum foundations headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Cincinnati ZOO & Botanical Garden, headquartered in Cincinnati, tops this list with the largest team on record.
Which city has the most arboretum foundations?
Washington leads with 8 headquartered companies, followed by Austin (7) and Atlanta (6).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,450 verified decision-maker contacts tracked across these 633 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 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 Smart Search, 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.
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