- D an D Dahlias (Baldwin, N.Y.)
- D. & C. Hardy Plant Nursery (Firm)
- D. & C. Hardy Plant Nursery.
- D. & C. Landreth (Firm)
- D. & C.A. Hill (Auctioneers : Philadelphia)
- D. & D. Company.
- D. A. Bellis (Firm)
- D. A. V. C.
- D. Appleton and Company.
- D. B. Garvin & Son.
- D. C. & B. G. Barhite.
- D. C. Kipe (Firm)
- D. C. Schroder,
- D. Cummins Co.
- D. D. McTavish (Firm)
- D. D. Simmons Company.
- D. Dierssen Co.
- D. Guldemond (Firm)
- D. H. Henry (Firm)
- D. Hansen (Firm)
- D. Hill (Firm)
- D. Hill Nursery Company.
- D. J. Giacomelli (Firm)
- D. Landreth & Fulton (Firm)
- D. Landreth and Co.
- D. Landreth Seed Company.
- D. Lothrop & Company.
- D. M. Flory & Co.
- D. M. H. D. G.
- D. McNallie (Firm)
- D. McNallie Plant and Fruit Co.
- D. McNallie Plant and Fruit Company.
- D. O. Coe Seed & Grain Co.
- D. Rusconi (Firm)
- D. Rusconi Seed Store.
- D. Rusconi Sons.
- D. S. Myer & Son.
- D. W.Coolidge (Firm)
- D., B
- D., N M
- D., R. P., active 1597-
- D., Review By: N M
- D., Y.
- D.A. Tibbs (Firm)
- D.A. White and Sons.
- D.B. Garvin & Son.
- D.B. Garvin's Sons.
- D.D. Simmons (Firm)
- D.F. Jamison (Firm)
- D.F. Jamison (Firm),
- D.F. Roddan & Son.
- D.F. Wickman (Firm)
- D.H. Gilbert (Firm)
- D.H. Gilbert (Firm),
- D.H. Gilbert Seed Co.
- D.H. Grandin Milling Co.
- D.H. Peck Company.
- D.H. Snowberger (Firm)
- D.H. Upjohn (Firm)
- D.H. Upjohn (Firm),
- D.I. Bushnell & Co.
- D.J. Bernhardt (Nursery),
- D.J. Scott Co., Inc.,
- D.L. Pierson (Firm)
- D.L. Skiff (Firm)
- D.L. Walley (Firm),
- D.M. Andrews (Firm)
- D.M. Ferry & Co.
- D.M. James (Firm)
- D.M. Wetsel & Son.
- D.O. Munson (Firm)
- D.R. Mayo (Firm)
- D.R. Mayo Seed Co., Inc.
- D.R. Woods & Co.
- D.S. Collins (Firm)
- D.S. Dunlap (Firm)
- D.S. Grimes & Son.
- D.S. Lake (Firm)
- D.S. Pruitt (Firm)
- D.V. Burrell (Firm)
- D.V. Burrell Seed Growers Company.
- D.V. Howell (Firm)
- D.W. Kaiser (Firm)
- D.W. Peckham (Firm)
- D.W. Shults & Co.
- D.W.C. Ruff (Firm)
- D’Hondt, Steven
- D’mazcre, Thomine
- Da Costa, Itayguara Ribeiro
- Da Costa, J. M. (Jacob Mendes), 1833-1900
- Da Costa, S. I., 1827-1907
- Da Cruz Lima Gerlach, Alice
- Da Cruz, Rhudson Henrique Santos Ferreira
- Da Fano, Corrado Donato, 1879-1927
- Da Rodda, Constanza
- Da Ros, Clovis Orlando
- Da Silva De Souza, Camila
- Da Silva, Danielle Karla Alves
- Da Silva, Denis
- Da Silva, Elodie, 1987-
- Da Silva, Gladstone Alves
- da Silva, Luiz Francelino
- Da Silva, Maria Aparecida
- Da Silva, Silvana Santos
- Da Silveira, Rosa Mara Borges
- Da, Sié Sylvestre
- Da, Wa
- Daan, Serge
- Daane, Kent
- Daane, Kent M.
- Daar, Sheila.
- Daas, Tarek
- Dababat, Abdelfattah A.
- Dabbagh, Suhayla A
- Dabbene, Roberto
- Dabbs, Donald H.,
- Dabek, Lisa
- Dąbek, Przemysław
- Dabin, G
- Dabney, Charles William, 1855-1945
- Daborn, Graham R. (Graham Richard), 1942-
- D'abramo, Louis R
- D'Abramo, Mauro
- Dabre, Zaïnabou
- D'abreo, C
- D'abrera, Bernard
- D'Abreu, E A
- Dabrowka, Wojciech
- Dabrowski, Konrad
- Dabry de Thiersant, Pierre, 1826-
- Dabydeen, S
- Dac Chung, Ngo
- Dacar, María Ana
- Dacasa-Rüdinger Maria D.C
- Daccordi, Mauro
- Dacey, J W
- Dachnowski-Stokes, Alfred P. (Alfred Paul), 1875-1949
- Dacie, John V. Sir (John Vivian),
- Dacie, Margaret K. V.
- DaCosta, Jeffrey M.
- Dacosta, Lewis.
- Dacosta, Matt
- Dacosta, Simone
- Dacqué, Edgar, 1878-1945
- Dadacha, Galgalo
- D'Adamo, N.
- D'Adamo, Paola
- Dadant, C.-P. (Camille Pierre), 1851-1938
- Dadant, Charles, 1817-1902
- Dadant, M. G. (Maurice George)
- Daday, Jenö, 1855-1920
- Dadd, George H., 1813-1868
- Daddah, Moctar Ould
- Daddow, Lina
- Daddow, Richard L.
- Dade City Nurseries.
- Dade, Heinrich Gerd
- Dadelahi, Samin
- Dadesa, Aman
- Dadheech, Pawan K
- Dadhwal, Tarun
- Dadisman, S. H. (Samuel Houston), 1879-
- Dadley, Albert E.
- Dadley, J.,
- Dadon, J. R.
- Dadswell, H.E.
- Dadswell, Inez W
- Dadswell, Michael J.
- Dadzie, Stephen
- Daecke, E
- Daecke, Victor
- Daehler, Curtis
- Daehnert, Theodor Johann Friedrich,
- Daemon, Erik
- Daenen
- Daeschler, Ted
- Daffe, Guillemine
- Daffner, Franz, 1844-
- Daffner, Hermann
- Daffodil Farm (Olympia, Wash.)
- Daffodil Mart.
- Dafforne, James, 1880
- Dafni, Amots
- Daga, Claudia
- Daga, Vanessa Salete
- Dagallier, Leo-Paul
- Dagar, H S
- Dagar, J C
- Dagar, Sumit Singh
- Daget, J.
- Dagg, A I
- Daggett & Ely,
- Daggett, A. S.
- Daggett, Frank Slater, 1855-1920
- Daggett, Richard
- Dagher-Kharrat, Magda Dou
- Daghlian, Charles P
- Dagit, Rosemary G.
- Dagit, Rosi
- Dagli, Ertan
- Dagosta, Fernando C. P.
- D'Agostini, Fernanda Maurer
- Dagostini, Gilles
- D'Agostino, Anthony S.
- D'Agostino, Emmanuel R
- Dagosto, Marian
- D'Agosto, Marta
- Daguet, Caroline
- Daguillon, Aug. (Auguste), 1862-1908
- Dahanukar, Neelesh
- Dahao, Lin
- Dahdul, Wasila M.
- Daher, Rogerio Figueiredo
- Dahialand,
- Dahl, A Orville
- Dahl, Adele
- Dahl, Anders
- Dahl, Anders, 1751-1789
- Dahl, Arthur L.
- Dahl, B. E.
- Dahl, Chris
- Dahl, Christine
- Dahl, D A
- Dahl, Darwin B.
- Dahl, Eilif
- Dahl, F. H. (Frederick Henry), 1917-
- Dahl, Friedrich, 1856-1929
- Dahl, Georg, 1769-1831
- Dahl, Karl Friedrich Theodor
- Dahl, Knut.
- Dahl, Maria
- Dahl, Ove, 1862-
- Dahl, R Dennis
- Dahl, R G
- Dahl, Ronald
- Dahlberg Nursery Company.
- Dahlberg, Arnold O. (Arnold Orlando), 1886-
- Dahlberg, M D
- Dahlberg's Nurseries.
- Dahlbom, Anders Gustav, 1806-1859
- Dahlcrest Gardens.
- Dahle, Herman B., 1855-
- Dahlem, Eugene A.
- Dahlemer Botanischer Verein
- Dahlen, Martha
- Dahl-Fan Garden.
- Dahlfeld, Carl.
- Dahlgreen, Allen K.
- Dahlgren, B. E. (Bror Eric), 1877-1961
- Dahlgren, Erik Wilhelm, 1848-