Answer: ragweed

AnswerCrossword Clue
RAGWEEDAllergen producer
ragweedplant whose pollen causes hay fever
ragweeda woody herb
RAGWEEDCause of some allergy flare-ups
RAGWEEDHay fever irritant
RAGWEEDAllergy sufferer's bane
RAGWEEDSneeze starter
RAGWEEDCause of hay fever
RAGWEEDHay fever cause
RAGWEEDPollen count plant
RAGWEEDSneeze cause
RAGWEEDHay-fever cause
RAGWEEDPollen source
RAGWEEDSneeze promoter
RAGWEEDPollen producer
RAGWEEDThis may bring a tear to the eye
RAGWEEDHay-fever source
RAGWEEDSneeze inducer
RAGWEEDHerb of genus: Ambrosia.
RAGWEEDSneezers' enemy.
RAGWEEDPollen scatterer.
RAGWEEDPlant with tattered leaves.
RAGWEEDBane of the hay fever victim.
RAGWEEDVery common plant.
RAGWEEDAllergy irritant.
RAGWEEDSeasonal irritant
RAGWEEDAllergy instigator
RAGWEEDCommon allergen
RAGWEEDAllergen
RAGWEEDReason for sneezin'