Most perennials do not grow well under or near evergreens, or other trees for that matter, because trees consume most of the available moisture, light and nutrients. Following is information about some perennials that may serve your purpose:    
https://www.extension.umn.edu/garden/yard-garden/landscaping/best-plants-for-tough-sites/docs/08464-...
http://www.extension.umn.edu/garden/turfgrass/special/planting-under-trees/doc/8237pdf.pdf