A study by the National Research Council, an arm of the National Academy of Sciences, released in 2006, shows populations of pollinators in North America declining for various reasons. A link to the brief of the report is here. Another reason to plant gardens with native plants is to provide native pollinators with more of the food and habitat that only native plants can provide. Here's a shot of a local bee enjoying a little sustenance on a Missouri Evening Primrose bloom in my front yard.
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