horticulture (n.) Look up horticulture at Dictionary.com
1670s, "cultivation of a garden," coined from Latin hortus "garden" (see yard (n.1)), probably on model of agriculture. Famously punned upon by Dorothy Parker.
horticultural (adj.) Look up horticultural at Dictionary.com
"pertaining to the culture of gardens," 1768, from horticulture + -al (1).
horticulturist (n.) Look up horticulturist at Dictionary.com
"gardener on a large scale," 1818, from horticulture + -ist. Earlier was horticultist (1754).
inoculation (n.) Look up inoculation at Dictionary.com
mid-15c. in horticulture, "act or practice of grafting buds;" 1714 in pathology, "insertion of a form of a virus in order to prevent a more serious attack of it," from Latin inoculationem (nominative inoculatio) "an engrafting, budding," noun of action from past participle stem of inoculare (see inoculate).