- L & L Farms
- L.
- L. & F. Dondero (Firm)
- L. A. Mosty & Sons.
- L. A. Rex and Son.
- L. A. Vogler & Son.
- L. Allen Seed Co.
- L. Allen Seed Company.
- L. B. Case (Firm)
- L. B. Clore & Son.
- L. Bamberger & Co.
- L. Boehmer & Co.
- L. C. Glenn (Firm)
- L. C. Hall (Firm)
- L. Cameron (Firm)
- L. Clause (Nursery)
- L. D. Platt & Son.
- L. Davis and C. Reymers (London, England),
- L. E. Hall (Firm)
- L. Earl Fogelsong (Firm)
- L. Espinoza, Luis
- L. F. Dintelman (Firm)
- L. Fancolly (Firm)
- L. Graves & Son.
- L. Green & Son Company.
- L. H. Bradford & Co.
- L. H. Grout & Son,
- L. J. Farmer (Firm)
- L. J. Rowe,
- L. L. May & Co.
- L. L. Olds (Firm)
- L. Meininger (Firm)
- L. Menand & Sons (Firm)
- L. N. Davis (Firm)
- L. N. Robeson Co.
- L. P. Cook (Firm)
- L. Prang & Co.
- L. Sherman Adams Co.
- L. Späth (Firm)
- L. Stassen, Junior, N.V. (Firm : Hillegom, Netherlands)
- L. Templin Seed Company.
- L. Teweles & Co.
- L. V. Doud & Son.
- L. W. Ramsey Co.
- L., J. H.
- L., M
- L., R.
- L., W.
- L.A. Mosty & Sons.
- L.A. Vogler & Son.
- L.A. Vories (Firm)
- L.A. Watkins Merchandise Company.
- L.B. Coddington (Firm)
- L.B. Coddington Co.
- L.B. Merrick Nurseries.
- L.C. Casler (Firm)
- L.C. Casler Nursery
- L.D. Baker Peony and Iris Garden.
- L.D. Baker Peony Gardens.
- L.D. Platt & Son.
- L.D. Waller Seed Company.
- L.E. Archias & Bro.
- L.E. Archias Seed Company.
- L.E. Arghias & Bro.
- L.E. Cooke Company,
- L.E. Ingoldsby (Firm)
- L.E. Ingoldsby Nursery,
- L.E. May (Firm)
- L.E. Wardell & Son.
- L.E. Weeks (Firm)
- L.E. Williams (Firm)
- L.E. Williams Nursery Company.
- L.F. Dintelmann (Firm)
- L.F. Jones Seed Co.
- L.G. Bragg & Co.
- L.G. Meier (Firm)
- L.G. Rathbun & Son.
- L.G.L. Limited, Environmental Research Associates.
- L.H. Frese & Sons.
- L.J. Bryant & Son.
- L.J. Egelberg (Firm)
- L.J. Farmer (Firm)
- L.J. Farmer Nursery Co.
- L.J. Farmer.
- L.J. Rambo's Wholesale Nurseries.
- L.K. Ellsberry & Co.
- L.K. Hostetter (Firm),
- L.K. Spyker & Sons.
- L.L. Kellogg & Co.
- L.L. May & Co.
- L.L. May & Co. (Saint Paul, Minn.)
- L.L. Milarch (Firm)
- L.L. Olds Seed Co.
- L.M. Gillilan (Firm)
- L.M. Gillilan (Firm).
- L.M. Nichols (Firm),
- L.N. Roberson (Firm)
- L.N. Roberson Company.
- L.O. Williams & Sons.
- L.O. Williams (Firm)
- L.P. Cook (Firm)
- L.P. Davis (Firm)
- L.P. Gunson & Co. (Rochester, N.Y.)
- L.P. Legg,
- L.R. Taylor & Sons.
- L.S. Ream (Firm)
- L.T. Bryant (Firm)
- L.T. Curtis & Son (Firm),
- L.T. Curtis & Son.
- L.W. Carr & Co.
- L.W. Goodell (Firm)
- L.W. Hall & Company
- L.W. Hall Company.
- L.W. Leithhead Drug Company.
- L.W. Myers (Firm)
- La Barre, Stéphane C
- La Baume, Wolfgang, 1885-1971
- La Baume-Pluvinel, G. de.
- La Blanchère, Henri de, 1821-1880
- La Branche, George M. L. (George Michel Lucien) 1875-1961
- La Brie, Willie
- La Broue, Salomon de
- La Caze, Louis, 1799-1869
- La Cépède, M. le comte de (Bernard Germain Etienne de La Ville sur Illon), 1756-1825
- La Chenal, Werner de, 1736-1800
- La Chesnée-Monstereul, Charles de
- La Condamine, Charles-Marie de, 1701-1774
- La Court, Simon de, 1721?-1793
- La Croix, Demetrius de
- La Croix, Isobyl Florence, 1933-
- La Crosse (Wis.). Board of Park Commissioners.
- La Doux, Tasha
- La Due, Lillian
- La Ferla, Rosabruna
- La Ferté-Sénectère, F. de (Faustin), 1808-1886
- La Follette, Robert M. (Robert Marion), 1855-1925
- La Forest, Brandon Thomas
- La Fosse, Étienne-Guillaume, 1699-1765
- La France Fruit and Plant Farms.
- La France Plant and Fruit Farm.
- La Garde, Roland V L
- La Granja (Irrigated Farm)
- La Granja Bulbs and Tubers.
- La Granja Farm.
- La Granja.
- La Guérinière, François Robichon de, 1688-1751
- La Harpe, Jean Jacques Charles de, 1802-1877
- La Harpe, Philippe de, 1830-1882
- La Hire, Jean Nicolas de 1685-1727
- La Hue, D. W. (Delmon William), 1911-
- La Lau, J.G. (Leiden)
- La Macchia, Graeme Lyle
- La Manna, Ludmila, 1974-
- La Marca, Enrique
- La Marca, Giuseppe
- La Mare-Richart, Florent de, approximately 1630-1718
- La Marre, L. H. de, 1730?-
- La Mattina Nursery.
- La Mer, Victor Kuhn, 1895-1966
- La Mettrie, Julien Offray de, 1709-1751
- La Monte, Francesca Raimonde, 1895-1982
- La Mothe, Bertha,
- La Motte, Courlez de
- La Notte, Pierfederico
- La Nouë, Pierre de
- La Park Seed & Plant Co.
- La Perna, Rafael.
- La Pérouse, Jean-François de Galaup, comte de, 1741-1788
- La Perre de Roo, Victor, 1834-1906
- La Personne, V. S.
- La Peyrère, Isaac de, 1594-1676
- La Piedra, Sylvia C. de
- La Porta, N
- La Porta, Nicola
- La Porte Pecan Nursery Co.
- La Prade, William H
- La Quay-Velázquez, Giomara
- La Quintinie, Jean de, 1626-1688
- La Retraite De Mm, Admission À
- La Reunion Fruit Farm & Nursery,
- La Rive, Auguste-Arthur de, 1801-1873
- La Rivers, Ira John, 1915-1977
- La Rocca, S
- La Roche Brier, Francisco
- La Rochette Nursery,
- La Rocque, A.
- La Rocque, Aurèle, 1909-1990
- La Roi, George
- La Rosa, Alfonso
- La Rosa, Juan Carlos Cabrera
- La Rossa, Francisco Rubén
- La Rue, Carl Downey, 1888-1955
- La Rue, Daniel Wolford, 1878-1969
- La Sala, Luciano F.
- La Salle County Nursery.
- La Salle de l'Etang, M. de (Simon Philibert), 1700-1765
- La Salle, John, 1951-2018
- La Scala Júnior, Newton
- La Terza, Antonietta
- La Torre Acuy, María Isabel
- La Torre Cuadros, Maria de los Angeles
- La Torre, Félice, 1846-1923
- La Touanne, M. le vicomte de (Edmond Marie Pierre Bigot), 1796-1863
- La Touche, J. D. D. (John David Digues), 1861-1935
- La Tour d'Auvergne, comte de.
- La Tour, Charlotte de, 1782-1875
- La Truong, Van
- La Valette St. George, Adolf Johann Hubert, Freiherr von, 1831-1910
- La Varre, William, 1898-1991
- La Vigne, G. F. de (Gislain François), -1805
- La Violette, Paul E.
- La Zacualpa rubber plantation Co.
- Laackmann, Hans, 1883-1918
- Laakkonen, Juha
- Laamari, Malik
- Laan, Pieter Adrianus van der, 1908-1992
- Laan, Richard van der, 1954-
- Laane, W
- Laar, Gijsbert van, 1768-1820
- Laar, Vincent van, 1939-
- Laarman, Jan G.
- Laats, Henkjan
- Laatsch, Abby D
- Lábadi, Vivien
- Labady, Mary
- Labalette, Françoise
- Labandeira, Conrad Christopher, 1950-
- LaBar, Laureen A.
- LaBar, W. K.
- Labarbera, Michael C
- Labarca, Rafael O.
- Labaroni, Carolina Alicia
- Labarque, Facundo Martín
- LaBars' Rhododendron Nursery,
- LaBars Rhododendron Nursery.
- LaBars' Rhododendron Nursery.
- Labarta, Ricardo A.
- Labarta, Uxío, 1949-
- Labastida-Estrada, Elizabeth
- LaBastille, Anne, 1935-2011
- Labat, Jean Baptiste, 1663-1738
- Labat, Jean-Noël, 1959-2011
- LaBau, Vernon J.
- Labbé F, Johnny
- Labbé, Alphonse, 1869-1945
- Labbé, José Ignacio
- Labbé, Paul, 1867-1943
- Labbé, Roland
- Labbé-Ibáñez, Pamela
- Labedz, Thomas E