How many letters does the top answer for “one who cultivates a garden.” have?

The most common answer is horticultor (11 letters).

Crossword clue: one who cultivates a garden.

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

horticultor 11 letters web-def

One who cultivates a garden.

one who cultivates a vineyard. 50% similar → vineyardist

one who cultivates an orchard. 50% similar → orchardist

one who cultivates trees. 50% similar → arboriculturist