noun. One, such as a horticulturist, who collects or grows plants.

A florist; a nurseryman.

noun. An expert on the identification and cultivation of plants

noun. an expert in the science of cultivating plants (fruit or flowers or vegetables or ornamental plants)

"Wayne Winterrowd, a plantsman and writer who drew on the lush gardens of his Louisiana childhood to form a paradise in the frigid hills of New England, died Sept. 17 at his home in Readsboro, Vt. He was 68."

botanist  horticulturalist  

expert  

Burbank  gardener  luther burbank  nurseryman