A lot vs. Alot: 9 Grammatical Pitfalls
1818, from horticulture + -ist. Earlier was horticultist (1754).
1670s, "cultivation of a garden," fabricated from Latin hortus "garden" (see yard (n.1)) + cultura (see culture); probably on model of agriculture. Famously punned upon by Dorothy Parker.
The science of cultivating garden plants.