Lombard Historical Society

Lombard Park District

Village of Lombard

Helen M Plum Memorial Library (Lombard Public Library)

Conservation Foundation

Forest Preserve District of DuPage County

Sierra Club – River Prairie Group

Wild Ones – Greater DuPage chapter

The DuPage Monarch Project

Garden Clubs of Illinois, Inc

National Garden Clubs

University of Illinois Extension – Master Gardeners Help Desk

Morton Arboretum Tree and Plant Advice

Wheaton Park District Native Plant Sale

DuPage Forest Preserve Native Plant Sale

DuPage Forest Preserve Information about Native Plants