Answer: ragweeds

AnswerCrossword Clue
RAGWEEDSCommon pollen producers
RAGWEEDSSneezing causes
RAGWEEDSHay fever causes
RAGWEEDSNature's nose annoyers
RAGWEEDSWhat botanists call "Ambrosia"
RAGWEEDSThese make thousands sneeze.
RAGWEEDSPollen carriers
RAGWEEDSPlants hated by hay-fever sufferers
RAGWEEDSTroublesome plants
RAGWEEDSSneeze causers, for some
ragweedsA North American plant of the daisy family. Its tiny green flowers produce copious amounts of pollen, making it a major causative agent of hay fever in some areas
ragweedsRAGWEED, a woody herb