nonflowering vs flowerless

nonflowering and flowerless both are adjectives.

Word	Noun	Adjective	Verb	Adverb
nonflowering	No	Yes	No	No
flowerless	No	Yes	No	No

As adjectives, nonflowering and flowerless are synonyms defined as:

nonflowering and flowerless: without flower or bloom and not producing seeds

nonflowering (adjective)	flowerless (adjective)
without flower or bloom and not producing seeds	without flower or bloom and not producing seeds