Xerces Society reported
A new study published in Environmental Toxicology and Chemistry found nearly ubiquitous pesticide contamination on butterfly host plants across two U.S. cities, Albuquerque, New Mexico, and Sacramento, California. In 20% of the plants tested, pesticide residues were at levels known to kill or otherwise harm butterflies and moths.
Smarter Pest Management: Pollinator Protection for Cities and Campuses
From the Xerces publications library, this fact sheet shares tips and resources for protecting pollinators in urban spaces and developing an integrated pest management approach.
Natural History Wanderings 
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