Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
horticulturally is an adverb meaning "by means of horticulture". It carries one recorded sense.
by means of horticulture
Definitions, synonyms and semantic relations for horticulturally come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.