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- Skinner, S G
- Skinner, Shirley M.
- Skinner, Stephen
- Skinner, T G
- Skinner, W. W. (William Woolford), 1874-
- Skinner, William D
- Skinner, William Woolford, 1874-
- Skinner'S Nursery,
- Skinners, L H
- Skipper, Dora L.,
- Skipper, Gavin
- Skipsmodelltanken.
- Skira, I J
- Skirboll, Esther
- Skirm, George W.
- Skirvin, R. M.
- Skirving, W.J
- Skjei, Roger E.
- Sklarew, Stephen H
- Sklenar
- Sklenář, Frantisek
- Sklenář, Petr
- Sklepkovych, B.
- Sklodowski, Jaroslaw
- Sklyarenko, S
- Skocny, Joe F.,
- Skog, Judith E.
- Skog, Judith E.
- Skog, Kenneth
- Skog, L E
- Skog, Laurence (Larry)
- Skog, Laurence E
- Skog, Laurence E.
- Skogen, Krissa
- Skoglund, Carol
- Skogsberg, T
- Skogsberg, Tage
- Skogsberg, Tage, 1887-
- Skogsberg, Tage, 1887-1951
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- Skojac, Danny
- Skolka, Marius
- Skone, Brandi,
- Skonieczny, M F
- Skoog, Folke Karl, 1908-
- Skoog, Ronald O.
- Skookum Nursery Co.
- Skopec, M M
- Skopec, Michele M
- Skopin, N G
- Skoracki, M
- Skoracki, Maciej
- Skórczewski, Piotr
- Skorepa, Allen C
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- Skorina, Laura K
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- Skorupa, Ladislau A.
- Skorupski, M
- Skottsberg, Carl, 1880-1963
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- Skou, Peder
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- Skovfrökontoret.
- Skovlin, Jon M.
- Skow, Christa D
- Skowron Volponi, Marta
- Skowron, Loretta M.
- Skowron, Stanislaw
- Skrabal, Melissa S
- Skramovsky, B M
- Skriletz, J
- Skrjabin, K I
- Skromme Seed Company.
- Skromme, Lars J.
- Skues, G. E. M. (George Edward Mackenzie), 1858-1949
- Skuhravá, Marcela
- Skuhravý, Vaclav
- Skuhrovec, Jiří
- Skuja, Mike
- Skuk, Gabriel
- Skuk, Gabriel O
- Skuk, Gabriel Omar
- Skulev, Bjarne
- Skull, Steve
- Skura, Brenton J.
- Skuse, Frederick A. A.
- Skutch, Alexander F. (Alexander Frank), 1904-2004
- Skute, Natalja
- Skutschas, Pavel
- Skuza, Juliana
- Skvarla, John
- Skvarla, John J
- Skvarla, John J.
- Skvarla, Michael
- Skvarla, Michael J
- Skvortsov, A K
- Skvortsov, Alexei K
- Skvortsova, N T
- Skvortzov, B V
- Skvortzow, B W
- Skwarko, S K
- Skwarra, Elisabeth, 1886-
- Sky Hook Farm,
- Sky Rival Delphinium Gardens.
- Sky, C.
- Sky-Cleft Gardens,
- Skylands Farm.
- Skyler, Patricia J.
- Skyva, Jan
- Skyvarla, John J
- Slaa, E. Judith
- Slabakova, Violeta
- Slabaugh, Ruth E
- Slabbekoorn, Hans
- Slabber, Martinus, 1741?-1835
- Slaby, O
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- Slack, Adrian (Adrian Charles)
- Slack, Cathie Baumgartner
- Slack, D. J.
- Slack, Henry A.
- Slack, Henry James, 1818-1896
- Slack, J H
- Slack, John Hamilton, 1834-1874
- Slack, Nancy G.
- Slack, R Douglas
- Slack, R S
- Slack-Smith, R J
- Slack-Smith, S M
- Slack-Smith, Shirley
- Slack-Smith, Shirley M
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- Slade, B E
- Slade, Brian E
- Slade, D J
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- Slade, Hermon
- Slade, N A
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- Sladen, Frederick William Lambert.
- Sladen, W. Percy, 1849-1900
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- Slagsvold, Tore
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- Slama, Karel
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- Slanis, Alberto C
- Slanis, Alberto C.
- Slanis, Alberto Carlos
- Slansky, Frank
- Slapcinsky, John
- Slapnik, Rajko
- Slaski, Jan J.
- Slate Seed Co.
- Slate Seed Company.
- Slate, W. C.
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- Slater, Candace.
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- Slater, Charles.
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- Slater, J S
- Slater, J W
- Slater, J.
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- Slater, L
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- Slater, Peter P
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- Slater, Tony
- Slater, Toy
- Slater, W L
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- Slatius, Henrick, 1585-1623
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- Slaughter, Bob H
- Slaughter, Charles W.
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- Slaughter, Margaret
- Slaughter, R. M.
- Slauson, William L
- Slaviero, LB
- Slavik, Emily
- Slavin, Michelle A.
- Slavova, Krasimira
- Slavova, Monica
- Sławski, Marek
- Slay, Michael E.
- Slaybaugh Bros. Nursery,
- Slaybaugh, E. E.,
- Slaybaugh, R. I.,
- Slaymaker & Son.
- Slaytor, M
- Sleder, J
- Sledjeski, Stephen Stanley, 1942-
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- Sleeman, Jonathan M.
- Sleemman, William Henry
- Sleen, Peter Van der
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- Sleeper & Son.
- Sleeper Bros. (Firm)
- Sleeper, Elbert L.
- Sleesman, J P
- Sleigh, Michael A.
- Sleight & Robinson,
- Sleight, Chas E
- Slemmons Gardens.
- Slentz, Sean
- Slessor, K N
- Sletten, Arild
- Sletten, Willis H., 1911-
- Sletwold Greenhouses,