- Blondel, André, 1863-1938
- Blondel, Cécile, 1964-
- Blondel, Charles, 1876-1939
- Blondel, James Augustus, 1665 or 1666-1734
- Blondel, Raoul, 1864-1944
- Blondell, Joseph
- Blondheim, Syril A.
- Blondin de Brutelette, Henri-Léopold, 1806-1878
- Blondlot, R. (René), 1849-1930
- Blonska, Dagmara
- Błoński, Franciszek, 1867-1910
- Blood, B. N.
- Blood, Brad R.
- Blood, Donald A.
- Bloodgood Nurseries.
- Bloodgood Stock Farm.
- Bloodgood, D W
- Bloodgood, Lida Fleitmann, 1894-
- Bloodworth, Stefan.
- Bloohmann, Heinrich
- Bloom, Charles T.
- Bloom, David A.
- Bloom, David.
- Bloom, G. L.
- Bloom, J. Harvey (James Harvey), 1860-1943
- Bloom, Khaled J., 1954-
- Bloom, Peter H.
- Bloom, Stephen A.
- Bloom, Tom C.
- Bloom, Trevor.
- Bloom, William W
- Bloomberg, Eugene.
- Bloomer, H. H.
- Bloomer, Hiram G., 1821-1874
- Bloomer, William.
- Bloomfield Nursery & Seed Co.
- Bloomfield, D. K.
- Bloomfield, E. N.
- Bloomfield, J. C.
- Bloomfield, M. C.
- Bloomfield, Maurice, 1855-1928
- Bloomfield, Michael Irwin.
- Blooming Grove Nursery.
- Bloomingdale Nurseries.
- Bloomingdale's (Firm)
- Bloomington Nurseries Co.
- Bloomington Nursery (Bloomington, Ill.)
- Bloomington Phoenix Nursery.
- Bloomsdale Seed Farms.
- Blooomsburg Dahlia Garden.
- Blösch, Manfred, 1934-2015
- Bloss, Deborah Ann.
- Blosser, Christian B.
- Blossey, Bernd.
- Blossom Knoll Nurseries.
- Blossom, Philip M.
- Błoszyk, Jerzy.
- Blot, Pierre, 1818-1874
- Blöte, H. C. (Hendrik Coenraad), 1900-1990
- Blottière, R. (René)
- Blottner, Steffen
- Blotto, Boris L.
- Blouch, Raleigh A.
- Blouin, François.
- Blouin, Isabel
- Blouin-Demers, Gabriel
- Blount, A. G.
- Blount, Edward, active 1588-1632
- Blount, Ralph Earl, 1865-
- Blow, Walter H.
- Blow, Warren C.
- Blowers, H. W.
- Blows, William T
- Bloxam, Richard Rowland, 1798-1877
- Bloxham, M. G.
- Bloxton, Thomas D.
- Blua, Matthew J.
- Bluck, John, active 1791-1819
- Blue Hill Nurseries (South Braintree, Mass.)
- Blue Hill Street Railway Co.
- Blue Hills Nurseries (Hartford, Conn.)
- Blue Ribbon Dahlia Co.
- Blue Ribbon Iris Gardens,
- Blue Ridge Evergreen Supply Co.
- Blue Ridge Gardens (Elliston, Va.)
- Blue Ridge Gardens (Roanoke, Va.)
- Blue Ridge Nursery (Linglestown, Pa.)
- Blue Ridge Park Nurseries.
- Blue Ridge Peony Gardens.
- Blue Ridge Plant Co.
- Blue Ridge Rhododendron Gardens.
- Blue Springs Nurseries.
- Blue Valley Nurseries.
- Blue Valley Nursery.
- Blue View Rock Gardens.
- Blueford, Joyce R
- BlueStem Incorporated.
- Bluethgen, Nico
- Bluff, Lucas
- Bluff, Matthias Joseph, 1805-1837
- Bluhm, Elaine A., 1925-2015
- Blum, Christopher O.
- Blum, Christopher Thomas
- Blum, Harold F. (Harold Francis), 1899-1980
- Blum, Isaak, 1833-1903
- Blum, J.
- Blum, J. Reinhard (Johann Reinhard), 1802-1883
- Blum, J. Reinhard, (Johann Reinhard. 1802-1883
- Blum, John L.
- Blum, J-P
- Blum, Murray S. (Murray Sheldon), 1929-2015
- Blum, Scott.
- Blum, Urs.
- Blum, William, 1881-1972
- Blum, Winfried E. H. (Winfied Erich Hubert), 1941-
- Blumberg, B.
- Blumberg, Richard Edward.
- Blume, C. L. (Carl Ludwig), 1796-1862
- Blume, Christina
- Blume, Elena
- Blume, K. K. (Kamila Käfer)
- Blume, Richard R
- Blume, Werner
- Blumenbach, Johann Friedrich, 1752-1840
- Blumenberg, Carl Fredrik.
- Blumenberg, William F.
- Blumenfeld, Martin
- Blumenfeldt, Carlos Lobos
- Blumenshine, Steve
- Blumenthal, Carl Ludwig
- Blumer, Evan.
- Blumer, J C
- Blumhof, Johann Georg Ludolf, 1774-1825
- Blumrich, Josef, 1865-1949
- Blumstein, Daniel T.
- Blunck, Hans
- Blunck, Hans [johann Christian]
- Blundell, Dr., 1790-1878
- Blundell, E A
- Blundon, E.
- Blundon, Jay A.
- Blunt Spurs (Pseudonym)
- Blunt, Anne, Lady, 1837-1917
- Blunt, Terry.
- Blunt, Thos. P. (Thomas P.)
- Blunt, Wilfrid Scawen, 1840-1922
- Blurton, B
- Blurton, William.
- Blus, Lawrence J.
- Blussé, Abraham, 1726-1808
- Blussé, Pieter, 1748-1823
- Blustein, Guillermo.
- Blüthgen, Nico
- Blüthgen, Paul, 1880-1967
- Blydenburgh, Samuel.
- Blymyer, David W.
- Blymyer, Michael J.
- Blyth, Alexander Wynter, 1844-1921
- Blyth, Amelie C., 1924-2012
- Blyth, Colette
- Blyth, Edward
- Blyth, Edward, 1810-1873
- Blyth, James E.
- Blyth, John
- Blyth, John D
- Blyth, John, 1815-1892
- Blyth, Meredith Wynter.
- Blythe, Donna G
- Blythe, Simon
- Blyton, Michaela
- Blytt, Axel, 1843-1898
- Blytt, Mathias Numsen, 1789-1862
- Bo, Claus
- Bo, Dai
- Bo, Liwen
- Bó, María Susana.
- Bo, Marzia
- Bó, Roberto Fabián.
- Boag, Brian
- Boag, D. A.
- Boag, David A. (David Archibald), 1934-2017
- Boag, E. J.
- Boag, Peter T. (Peter Thomas), 1952-
- Boag, T. D.
- Boahen, A. Adu (Albert Adu), 1932-2006
- Boakye, Patrick
- Boal, Clint W.
- Boal, Jean G.
- Bôa-Morte, M. O. (Murilo de Oliveira)
- Boano, Giovanni 1952-
- Board Of Agriculture (Trinidad)
- Board of Agriculture of Ohio.
- Board of Agriculture of Upper Canada.
- Board of Control of Botanical Abstracts.
- Board of Live Stock Commissioners of Wyoming.
- Board, Veryl V.
- Boardman, Edward T. (Edward Thorpe), 1904-1988
- Boardman, George A. (George Augustus), 1818-1901
- Boardman, Lottie
- Boardman, Richard (Richard E.)
- Boardman, Richard S. (Richard Stanton), 1923-2011
- Boardman, Rosina Cox.
- Boardman, Samuel Lane, 1836-1914
- Boardman, W. (William)
- Boaretto, Amanda Galdi
- Boarin-Alcalde, Ligia
- Boarman, William I
- Boas, Franz, 1858-1942
- Boas, Helene M.
- Boas, J. E. V. (Johan Erik Vesti), 1855-1935
- Boas, Review By: H M
- Boase, Henry S. (Henry Samuel), 1799-1883
- Boates, J. Sherman.
- Boatman, Nigel D
- Boatman's Tennessee Nursery & Seed Co.
- Boaventura, Yone M. S.
- Bob Anderson (Nursery)
- Bob Dixon
- Bobadilla, Dante E.
- Bobadilla, Leidy
- Bobadilla, Patricio.
- Bobadilla, Segundo
- Bobadilla-Utrera, Cristina
- Bobb, M. L. (Marvin Lester), 1911-1989
- Bobbette, R S W
- Bobbink & Atkins (Nursery)
- Bobbink Nurseries, Inc.
- Bobbink, Lambertus C., 1866-1950
- Bobe, K. H.
- Bobek, Karl.
- Bober Seeds, Inc.
- Bober, Sam H.
- Bobich, Edward G
- Bobisut, O.
- Boblitz, Ione B.
- Bobo, B
- Bobo, M. Yvonne.
- Bobo, Matthew R.
- Bobojonova, Khulkar
- Bobori, Dimitra
- Bobos, Iulius
- Bobot, Teiamar da Encarnação
- Bobret︠s︡kiĭ, N. V. (Nikolaĭ Vasilʹevich), 1843-1907
- Bobrov, Alexander A
- Bobrov, Vladimir V.
- Bobrowski, Vera Lucia.
- Bob's Blooming Bulbs (Firm)
- Boc, Stanley J.
- Bocadi
- Bocak, Ladislav