flowerless vs nonflowering

flowerless and nonflowering both are adjectives.

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

As adjectives, flowerless and nonflowering are synonyms defined as:

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

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