Sources for Native Plants
Hidden Savanna Nursery, Kalamazoo MI
WildType Nursery, Mason MI
Cardno Native Plant Nursery, Walkerton IN
Bear in mind that the closer to home you buy your plants, the more likely you are to be purchasing SW Michigan genotypes. If you prefer local genotypes, ask before you buy.
Native Plant Search Engines
Cardno Native Browser
New England Wildflower Society Native Plant Finder
Native Plants Tolerant of Juglone (Black Walnut, etc.)
Prairie Moon Nursery Black Walnut Tolerance List All natives, although some may not be native to Michigan. This list is from Minnesota.
Black Walnut Toxicity MSU Please note that this list requires careful research, as many of the plants here are NOT natives. Use with caution.