The Collaborative International Dictionary of English v.0.48:

Seedsman \Seeds"man\, n.; pl. Seedsmen (-men).
   1. A sower; one who sows or scatters seed.
      [1913 Webster]

            The seedsman
            Upon the slime and ooze scatters his grain. --Shak.
      [1913 Webster]

   2. A person who deals in seeds.
      [1913 Webster]

WordNet (r) 3.0 (2006):

seedsman
    n 1: a dealer in seeds [syn: seedsman, seedman]