| NEW YORK BOTANICAL GARDEN | $124,690,916 | C41 | published | science: research education | Bronx, NY | 2024 |
| THANKSGIVING POINT INSTITUTE INC | $99,872,507 | C41 | published | science: research education | Lehi, UT | 2024 |
| ATLANTA BOTANICAL GARDEN INC | $76,001,816 | C41 | published | | Atlanta, GA | 2024 |
| CHICAGO HORTICULTURAL SOCIETY | $68,147,549 | C41 | published | science: research education | Glencoe, IL | 2024 |
| MISSOURI BOTANICAL GARDEN BOARD OF TRUSTEES | $60,959,371 | C41 | published | science: research education | Saint Louis, MO | 2024 |
| MORTON ARBORETUM | $57,793,716 | C41 | published | science: research education | Lisle, IL | 2024 |
| DENVER BOTANIC GARDEN INC | $52,099,889 | C41 | published | science: research education | Denver, CO | 2025 |
| BROOKLYN BOTANIC GARDEN CORPORATION | $36,200,661 | C41 | published | science: research education | Brooklyn, NY | 2024 |
| DALLAS ARBORETUM & BOTANICAL | $32,226,986 | C41 | published | science: research education | Dallas, TX | 2024 |
| DESERT BOTANICAL GARDEN | $30,218,299 | C41 | published | girls boys: girl scouts | Phoenix, AZ | 2024 |
| NATIONAL TROPICAL BOTANICAL GARDEN | $29,167,793 | C41 | published | science: research education | Kalaheo, HI | 2024 |
| COASTAL MAINE BOTANICAL GARDENS INC | $28,580,119 | C41 | published | science: research education | Boothbay, ME | 2024 |
| MINNESOTA LANDSCAPE ARBORETUM FOUNDATION | $24,833,060 | C41 | published | science: research education | Chaska, MN | 2024 |
| NAPLES BOTANICAL GARDEN INC | $20,443,088 | C41 | published | science: research education | Naples, FL | 2024 |
| BROOKGREEN GARDENS | $18,488,480 | C41 | published | | Pawleys Isl, SC | 2024 |
| NORFOLK BOTANICAL GARDEN INC | $17,765,314 | C41 | published | science: research education | Norfolk, VA | 2024 |
| MARIE SELBY BOTANICAL GARDENS INC | $17,573,787 | C41 | published | science: research education | Sarasota, FL | 2024 |
| DESCANSO GARDENS FOUNDATION | $17,208,622 | C41 | published | | La Canada Flt, CA | 2025 |
| PHIPPS CONSERVATORY AND BOTANICAL GARDENS INC | $16,088,921 | C41 | published | science: research education | Pittsburgh, PA | 2024 |
| RUTH ST JOHN & JOHN DUNHAM WEST FOUNDATION INC | $15,860,045 | C41 | inferred 0.50 | | Manitowoc, WI | 2025 |
| HOLDEN ARBORETUM TRUST | $14,425,652 | C41 | published | science: research education | Brooklyn, OH | 2024 |
| LEWIS GINTER BOTANICAL GARDEN INC | $13,494,627 | C41 | published | | Richmond, VA | 2024 |
| SANTA BARBARA BOTANIC GARDEN INC | $13,077,743 | C41 | published | science: research education | Santa Barbara, CA | 2024 |
| BUFFALO AND ERIE COUNTY BOTANICAL GARDENS SOCIETY INC | $11,572,434 | C41 | published | | Buffalo, NY | 2025 |
| QUAIL GARDENS FOUNDATION INC | $11,143,670 | C41 | published | science: research education | Encinitas, CA | 2024 |
| SAN ANTONIO BOTANICAL GARDEN SOCIETY INC | $10,925,330 | C41 | published | | San Antonio, TX | 2025 |
| HOLDEN ARBORETUM | $10,550,732 | C41 | published | science: research education | Kirtland, OH | 2024 |
| CLEVELAND BOTANICAL GARDEN | $9,211,305 | C41 | published | launch: launch | Cleveland, OH | 2024 |
| HUNTSVILLE MADISON COUNTY BOTANICAL GARDEN SOCIETY INC | $8,705,316 | C41 | published | science: research education | Huntsville, AL | 2024 |
| SAN FRANCISCO BOTANICAL GARDEN SOCIETY AT STRYBING ARBORETUM | $7,908,334 | C41 | published | | San Francisco, CA | 2024 |
| HOUSTON BOTANIC GARDEN | $7,644,996 | C41 | published | science: research education | Houston, TX | 2024 |
| MONTGOMERY BOTANICAL CENTER INC | $7,050,372 | C41 | inferred 0.80 | science: research education | Miami, FL | 2024 |
| NORTH CAROLINA ARBORETUM SOCIETY | $6,831,084 | C41 | published | science: research education | Asheville, NC | 2024 |
| JAPANESE FRIENDSHIP GARDEN AND MUSEUM OF SAN DIEGO | $6,807,380 | C41 | published | | San Diego, CA | 2024 |
| SNUG HARBOR CULTURAL CENTER AND BOTANICAL GARDEN | $6,795,392 | C41 | published | science: research education | Staten Island, NY | 2024 |
| QUEENS BOTANICAL GARDEN SOCIETY INC | $6,705,072 | C41 | published | science: research education | Flushing, NY | 2024 |
| TUCSON BOTANICAL GARDENS | $6,219,248 | C41 | published | science: research education | Tucson, AZ | 2024 |
| MYRIAD GARDENS FOUNDATION | $6,099,706 | C41 | published | | Oklahoma City, OK | 2024 |
| RANCHO SANTA ANA BOTANIC GARDEN TRUSTEES OF RANCHO SANTA ANA BOTAN | $6,016,009 | C41 | published | | Claremont, CA | 2024 |
| THE CHANTICLEER FOUNDATION | $5,923,242 | C41 | inferred 0.80 | | Wayne, PA | 2024 |
| SOUTH COAST BOTANIC GARDEN FOUNDATION INC | $5,916,403 | C41 | published | launch: launch | Pls Vrds Pnsl, CA | 2024 |
| LOS ANGELES ARBORETUM FOUNDATION INC | $5,753,954 | C41 | published | | Arcadia, CA | 2024 |
| BOTANICA INC | $5,585,788 | C41 | published | | Wichita, KS | 2024 |
| IDAHO BOTANICAL GARDENS INC | $5,533,992 | C41 | published | | Boise, ID | 2024 |
| POWELL GARDENS INC | $5,327,839 | C41 | inferred 0.90 | science: research education | Kingsville, MO | 2024 |
| BOYCE THOMPSON SOUTHWESTERN ARBORET UM | $5,148,570 | C41 | inferred 0.90 | | Superior, AZ | 2024 |
| THE BLOEDEL RESERVE | $5,017,296 | C41 | inferred 0.70 | | Bainbridge Is, WA | 2025 |
| JOHN J TYLER ARBORETUM | $4,687,468 | C41 | published | science: research education | Media, PA | 2025 |
| HOYT ARBORETUM FRIENDS FOUNDATION INC | $4,615,451 | C41 | published | | Portland, OR | 2025 |
| BOTANICAL GARDEN OF THE PIEDMONT | $4,545,390 | C41 | published | | Charlottesville, VA | 2024 |
| ALINE AND EDGAR IGLEHEART FOUNDATION INC | $4,477,146 | C41 | published | abuse: animal | Evansville, IN | 2025 |
| HOUSTON ARBORETUM & NATURE CENTER | $4,435,058 | C41 | published | | Houston, TX | 2024 |
| GREEN BAY BOTANICAL GARDEN INC | $4,280,140 | C41 | published | | Green Bay, WI | 2024 |
| MCKEE BOTANICAL GARDEN INC | $4,139,389 | C41 | published | | Vero Beach, FL | 2024 |
| MARTIN LUTHER KING GARDENS INC | $4,121,441 | C41 | published | | Bloomfield, NJ | 2024 |
| MARIN ART AND GARDEN CENTER | $4,035,091 | C41 | published | | Ross, CA | 2025 |
| METROPARKS TOLEDO FOUNDATION | $3,898,605 | C41 | inferred 0.60 | | Toledo, OH | 2024 |
| CAPE FEAR BOTANICAL GARDEN | $3,878,230 | C41 | published | | Fayetteville, NC | 2024 |
| STONECROP GARDENS INC | $3,672,665 | C41 | published | | Cold Spring, NY | 2024 |
| HAWAII TROPICAL BOTANICAL GARDEN | $3,597,312 | C41 | published | | Papaikou, HI | 2025 |
| ROBERT W MONK GARDENS INC | $3,484,438 | C41 | published | | Wausau, WI | 2024 |
| ANDERSON GARDENS | $3,236,175 | C41 | published | | Rockford, IL | 2025 |
| MENDOCINO COAST BOTANICAL GARDENS CORPORATION | $3,174,858 | C41 | published | | Fort Bragg, CA | 2024 |
| CAPITAL ROOTS INC | $3,168,836 | C41 | published | | Troy, NY | 2024 |
| LAN SU CHINESE GARDEN | $2,888,405 | C41 | published | | Portland, OR | 2024 |
| OKEFENOKEE SWAMP PARK INC | $2,852,600 | C41 | inferred 0.70 | | Waycross, GA | 2024 |
| JEFFERSON COUNTY GREENWAYS FOUNDATION | $2,740,383 | C41 | inferred 0.80 | | Birmingham, AL | 2024 |
| JACKSONVILLE ARBORETUM & GARDENS INC | $2,630,371 | C41 | published | | Jacksonville, FL | 2024 |
| THE SPIRIT OF OKOBOJI | $2,566,371 | C41 | published | | Okoboji, IA | 2025 |
| NORTH CAROLINA BOTANICAL GARDEN FOUNDATION INC | $2,490,281 | C41 | published | science: research education | Chapel Hill, NC | 2024 |
| CITY GREEN INC | $2,478,694 | C41 | published | | Clifton, NJ | 2024 |
| PEACE RIVER BOTANICAL & SCULPTURE GARDENS INC | $2,465,148 | C41 | published | | Punta Gorda, FL | 2025 |
| HIGHSTEAD FOUNDATION INC | $2,287,584 | C41 | inferred 0.60 | science: research education | Redding, CT | 2024 |
| BERKSHIRE GARDEN CENTER INC | $2,282,850 | C41 | published | | Stockbridge, MA | 2024 |
| RUTH BANCROFT GARDEN INC | $2,268,806 | C41 | published | science: research education | Walnut Creek, CA | 2025 |
| WELLFIELD BOTANIC GARDENS INC | $2,237,494 | C41 | published | science: research education | Elkhart, IN | 2024 |
| STANLEY W HAYES RESEARCH FOUNDATION INCORPORATED | $2,157,278 | C41 | inferred 0.70 | space: outer | Richmond, IN | 2024 |
| IDA CASON CALLAWAY FOUNDATION | $2,072,081 | C41 | published | | Pine Mountain, GA | 2024 |
| BETTY FORD ALPINE GARDENS | $1,810,170 | C41 | published | | Vail, CO | 2024 |
| POLLY HILL ARBORETUM INC | $1,672,116 | C41 | published | science: research education | West Tisbury, MA | 2024 |
| OREGON GARDEN FOUNDATION | $1,593,159 | C41 | published | | Silverton, OR | 2025 |
| REEVES-REED ARBORETUM | $1,586,006 | C41 | published | | Summit, NJ | 2024 |
| PHILADELPHIA ORCHARD PROJECT | $1,574,688 | C41 | published | | Philadelphia, PA | 2024 |
| ARBORETUM SAN ANTONIO | $1,516,088 | C41 | published | | San Antonio, TX | 2024 |
| ALASKA BOTANICAL GARDEN INC | $1,513,223 | C41 | published | | Anchorage, AK | 2025 |
| DELAWARE CENTER FOR HORTICULTURE INC | $1,427,286 | C41 | published | science: research education | Wilmington, DE | 2024 |
| MERWIN CONSERVANCY INC | $1,420,584 | C41 | published | launch: launch | Haiku, HI | 2025 |
| ROTARY BOTANICAL GARDENS INC | $1,382,423 | C41 | published | women: issues | Janesville, WI | 2024 |
| LEACH BOTANICAL GARDEN | $1,380,301 | C41 | published | | Portland, OR | 2024 |
| BARTLETT ARBORETUM ASSOCIATION INC | $1,340,654 | C41 | published | science: research education | Stamford, CT | 2024 |
| MIAMI BEACH GARDEN CONSERVANCY INC | $1,324,351 | C41 | published | | Miami Beach, FL | 2024 |
| SONNENBERG GARDENS | $1,295,400 | C41 | published | | Canandaigua, NY | 2025 |
| INNISFREE FOUNDATION INC | $1,260,370 | C41 | inferred 0.60 | | Millbrook, NY | 2024 |
| ABRAHAM LINCOLN MEMORIAL GARDEN FOUNDATION | $1,244,270 | C41 | published | | Springfield, IL | 2024 |
| CRATER LAKE NATURAL HISTORY ASSOCIATION INCORPORATED | $1,237,864 | C41 | inferred 0.70 | | Crater Lake, OR | 2024 |
| AWBURY ARBORETUM ASSOCIATION INC | $1,236,425 | C41 | published | | Philadelphia, PA | 2024 |
| SOUTH TEXAS BOTANICAL GARDENS & NATURE CENTER | $1,214,752 | C41 | published | | Corp Christi, TX | 2024 |
| THE COLUMBUS BOTANICAL GARDENS INC | $1,178,847 | C41 | published | | Columbus, GA | 2024 |
| ADKINS ARBORETUM LTD | $1,109,069 | C41 | published | | Ridgely, MD | 2024 |
| CHIHUAHUAN DESERT RESEARCH INSTITUTE | $1,087,041 | C41 | inferred 0.80 | | Fort Davis, TX | 2025 |