
1) Burbank 2) Gardener 3) Nurseryman 4) Plantsman
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https://www.crosswordclues.com/clue/horticulturist

1) Expert 2) Plantsman
Found on
https://www.crosswordclues.com/clue/horticulturist

• (n.) One who practices horticulture.
Found on
http://thinkexist.com/dictionary/meaning/horticulturist/

(from the article `Downing, Andrew Jackson`) ...and Fruit Trees of America (1845), written with his brother Charles, was the most complete treatise of its kind yet written and led to Downing`s ...
Found on
http://www.britannica.com/eb/a-z/h/71
Hor`ti·cul'tur·ist noun One who practices horticulture.
Found on
http://www.encyclo.co.uk/webster/H/64

One who practices the science and art of cultivating fruits, vegetables or ornamental plants. Farmers and orchardists sometimes are called horticulturists, as are home gardeners. In agriculture the term usually is reserved for scientists.
Found on
http://www.farmworldonline.com/General/Terms.asp

[
n] - an expert in the science of cultivating plants (fruit or flowers or vegetables or ornamental plants)
Found on
http://www.webdictionary.co.uk/definition.php?query=horticulturist

horticulturist Someone who strives to improve crop yields, quality, nutritional value, and resistance to insects, diseases, and environmental stresses.
Found on
http://www.wordinfo.info/words/index/info/view_unit/1002/
No exact match found.