- Grance, Elizangela L. V.
- Grand Bay Nurseries.
- Grand Canyon Entomological Expedition 1934-
- Grand Canyon Entomological Expedition (1934)
- Grand Central Nurseries.
- Grand Forks Seed Co.
- Grand Island Nurseries,
- Grand Junction Fruit Growers' Association.
- Grand Junction Seed and Nursery Co.
- Grand Junction Seed Co.
- Grand Mere Nurseries.
- Grand Mere Nursery.
- Grand Mere Plant Farms.
- Grand Mesa, Uncompahgre, and Gunnison National Forest (Agency : U.S.)
- Grand Opera House (London, Ont.)
- Grand Prairie Seed Farm.
- Grand Rapids Growers Association.
- Grand Rapids Growers, Inc.
- Grand River Ranch.
- Grand Staircase-Escalante National Monument (Utah)
- Grand Teton National Park (Agency : U.S.)
- Grand View Fruit and Plant Farm.
- Grand View Iris Gardens.
- Grand, Alison P.
- Grand, J Barry
- Grand, James B
- Grand, L F
- Grand, Yves Le
- Granda, A M
- Granda-Paucar, Arturo
- Granda-Rodríguez, Hernán
- Granda-Rodríguez, Hernán D
- Grandcolas, Philippe
- Grandcourt, Edwin
- Grande Allende, José Ramón.
- Grande, Henrique
- Grande, Juan Manuel
- Grande, Lance
- Grande, Terry.
- Grandeallende
- Grandeau, L. (Louis), 1834-1911
- Grand'Eury, François Cyrille. 1839-1917
- Grández Rios, Cesar
- Grández, Alessandra
- Grandez-Rios, Julio M.
- Grandi, G
- Grandi, M. Florencia
- Grandi, R A Piccolo
- Grandi, Rosely Ana Piccolo
- Grandi, Telma Sueli Mesquita
- Grandidier, Alfred, 1836-1921
- Grandidier, G. (Guillaume), 1873-1957
- Grandinete, Yuri
- Grandis, Adriana
- Grandison, Alice G. C. (Alice Georgie Cruickshank)
- Grandison, Kathryn W.
- Grandison, R
- Grandjean, F. (François Alfred), 1882-
- Grandjean, Frederic
- Grandjean, L
- Grando, Raquel L. S. C. (Raquel Lopes Sinigaglia Caribé)
- Grandon, Jarrod
- Grandón, Maritza A
- Grandori, Remo, 1885-1955
- Grandova, Maria
- Grandperrin, René 1936-
- Grandsagne, Ajasson de.
- Grandview Gardens,
- Grandview Nursery,
- Grandville, J. J., 1803-1847
- Grandy, Paul A
- Granel, Maurice 1853-1934
- Graner, Friedrich von, 1847-1914
- Graner, Lieut
- Granert, William G
- Granett, J
- Granfelt, Carl-Eric
- Grangaard, Daniel V.
- Grange, Daniel R
- Grange, E R
- Grange, Jules,
- Grange, Kenneth R.
- Grange, Roger T.
- Grange, Wallace B. (Wallace Byron), 1905-1987
- Grangeiro, D.
- Grangeiro, Thalles Barbosa
- Grangeon, M
- Granger Gardens,
- Granger, Albert, 1837-1911
- Granger, Christopher M. (Christopher Mabley), 1885-1967
- Granger, J. S.
- Granger, Noelle A
- Granger, Raymond Laurent.
- Granger, Sue Elizabeth
- Granger, Suzanne L.
- Granger, Walter, 1872-1941
- Granha, José Rodolfo Dantas de Oliveira
- Graniel, Manuel
- Granite State Nurseries.
- Granja Fernández, Rebeca
- Granjon, Laurent
- Granmo, A
- Granmo, Alfred
- Grano, Mauro
- Grano-Maldonado, Mayra I.
- Granovsky, Alexander A.
- Grant C. Mitsch (Firm)
- Grant E. Mitsch (Firm)
- Grant E. Mitsch Daffodil Haven (Nursery)
- Grant Gardens (Louisville, Ky.)
- Grant Kearns (Firm)
- Grant Street Gardens.
- Grant, A J
- Grant, Adele Lewis
- Grant, Alva Day, 1920-2014
- Grant, B Rosemary
- Grant, Bruce S., 1942-
- Grant, Bruce, 1964-
- Grant, C. H. B. (Claude Henry Baxter), 1878-1958
- Grant, C. W.
- Grant, Chapman, 1887-1983
- Grant, Cynthia T
- Grant, D
- Grant, D. K. S.
- Grant, David C
- Grant, Donald.
- Grant, E. A.
- Grant, E. B.
- Grant, F A
- Grant, F E
- Grant, F. Blake
- Grant, Frank T.
- Grant, G. R. M.
- Grant, George Monro, 1835-1902
- Grant, Gerold
- Grant, Gilbert S
- Grant, Harold J., Jr.
- Grant, Henry Lee, Jr.
- Grant, I F
- Grant, J A
- Grant, J.
- Grant, J. D. (Joseph Donohoe), 1858-1942
- Grant, James
- Grant, James
- Grant, James Augustus, 1827-1892
- Grant, James, 1930
- Grant, Jason R., 1969-
- Grant, Jerome Franklin 1955-
- Grant, Joan A
- Grant, John Beveridge
- Grant, John M.
- Grant, Johnson
- Grant, Justin R
- Grant, Katharine
- Grant, Keith
- Grant, Kerr
- Grant, Kirstie
- Grant, Lavinia
- Grant, Lorna
- Grant, Madison, 1865-1937
- Grant, Madison.
- Grant, Margaret H.
- Grant, Marshall N., 1917-
- Grant, Martin L. (Martin Lawrence), 1907-1968
- Grant, Mary Keble.
- Grant, Norman
- Grant, P. W.
- Grant, Paul
- Grant, Paul B.C
- Grant, Peter M.
- Grant, Peter R
- Grant, Philip
- Grant, Richard A.
- Grant, Richard E., 1927-1994
- Grant, Robert Edmond, 1793-1874
- Grant, Robert, 1814-1892
- Grant, S T
- Grant, Scott M.
- Grant, Sebastian
- Grant, Sharon
- Grant, Sharon D.
- Grant, Stan
- Grant, Sydney S
- Grant, Taran, 1972-
- Grant, Theodore J
- Grant, Theodore J.
- Grant, Thomas Macpherson
- Grant, Todd A.
- Grant, Tom
- Grant, Tyler J.
- Grant, U S
- Grant, Ulysses Sherman, 1867-1932
- Grant, V J I
- Grant, Verne
- Grant, W E Ogilvie
- Grant, W L
- Grant, W R Qgilvie
- Grant, W. Y. C.
- Grant, W.H.G.
- Grant, William C
- Grant, William F. 1924-2011
- Grant, William M
- Grantham, Bob
- Grantham, John Bernard.
- Grantham, Melissa
- Grant-Hoffman, Nikki.
- Grantier, Leona L.
- Grant-Mackie, J A
- Grant-Mackie, Jack A
- Grantmyre, Brenda
- Grant'S Nursery,
- Grants Pass Gladiolus Club.
- Grant-Suttie, G. L. P.
- Granum, Bernard M.
- Granvik, Hugo, 1889-
- Granville Cowing (Firm)
- Granville, Jean-Jacques de
- Granville, Paul S.
- Granzinolli, Marco Antonio M.
- Granzotto, Sérgio V
- Granzow de la Cerda, Íñigo
- Grapci Kotori, Linda
- Grape Vine Nursery.
- Grape, Anders 1880-1959
- Grapheus, Cornelius Scribonius.
- Graphodatsky, Alexander
- Grard, Pierre
- Gras, Albin.
- Gras, Auguste, 1819-1874
- Gras, Claude Joseph Albin, 1808-1856
- Gras, Roger
- Grasby, Stephen E.
- Grasela, James J.
- Grasham, John L.
- Grashoff, Jerold Lee 1945-1976
- Graslin, Adolphe Hercule de.
- Grass, A. L.
- Grass, Al
- Grassa, José María
- Grassby-Lewis, Rupert J.
- Grassé, P P
- Grassé, Pierre-Paul, 1895-1985
- Grasser, J
- Grasseschi, Giacomo
- Grasset, Eugène, 1841-1917
- Grasset, J. P. A.
- Grasset, Joseph, 1849-1918
- Grasshoff, Manfred
- Grassi, Battista, 1854-1925
- Grassi, Diego Javier