Ragweed, a prolific pollen producer ... Indiana’s weather this late summer has been a mix of semi-dry conditions with ...

Glyphosate-resistant biotypes of giant ragweed and common waterhemp have been confirmed within specific locations in Minnesota in 2007. Diversification with other herbicide modes of action via ...

Ragweed continues to plague San Antonio's allergy ... except grasses replaced elm in the mix of top allergens. Premier Allergy of Texas, a San Antonio clinic, offers tips to pollen-proof your ...