Copper Iris (Iris fulva)
Eastern Blue Star (Amsonia tabernaemontana)
Foxglove Beardtongue (Penstemon digitalis)
Shining Blue Star (Amsonia illustris)
Blue Vervain (Verbena hastata)
Cardinal Flower (Lobelia cardinalis)
Culver’s Root (Veronicastrum virginicum)
Halberdleaf Rose Mallow (Hibiscus laevis)
Prairie Blazing Star (Liatris pycnostachya)
Showy Coneflower (Rudbeckia fulgida).
Spider lily (Hymenocallis occidentalis)
Blue Lobelia (Lobelia siphilitica)
Rose Turtlehead (Chelone obliqua)
Spiked Blazing Star (Liatris spicata)
We also suggest including one or more of our sedges to use as ground covers to occupy soil surface in the basin and on the berms and to minimize the encroachment of unwanted volunteer plants. For this, we like Fox Sedge (Carex vulpinoidea), Yellow-Fruited Sedge (Carex annectens), Globe Sedge (Carex grayi), or Palm Sedge (Carex muskingumensis).
Grow Native! has a nice sample design plan for a rain garden that you can take inspiration from. Or the Native Plants for Your Landscape booklet from MDC includes a section on rain gardens that you can use to help with design layout.
These adaptable plants should do just fine in almost any part of your rain garden:
Copper Iris (Iris fulva)
Eastern or Shining Blue Star (Amsonia tabernaemontana or Amsonia illustris)
Golden Alexander (Zizia aurea)
Meadow Anemone (Anemone canadensis)
Purple Rocket (Iodanthus pinnatifidus)
Foxglove Beardtongue (Penstemon digitalis)
Cardinal Flower (Lobelia cardinalis)
Culver’s Root (Veronicastrum virginicum)
Garden Phlox (Phlox paniculata)
Hollow Joe Pye Weed (Eutrochium fistulosum)
Marsh Blue Violet (Viola cucullata)
Marsh Milkweed (Asclepias incarnata)
Meadow Rue (Thalictrum dasycarpum)
Michigan Lily (Lilium michiganense)
Showy Coneflower (Rudbeckia fulgida)
Mist Flower (Conoclinium coelestinum)
Rose Turtlehead (Chelone obliqua)
White Turtlehead (Chelone glabra)
Columbine (Aquilegia canadensis)
Jack in the Pulpit (Arisaema triphyllum)
Golden Ragwort (Packera aurea)
Purple Rocket (Iodanthus pinnatifidus)
Wild Ginger (Asarum canadense)
Pinkroot (Spigelia marilandica)
Jumpseed (Persicaria virginiana)
Blue Wood Sedge (Carex flaccosperma)
Bush’s Sedge (Carex bushii)
Long Hair Sedge (Carex crinita)
Palm Sedge (Carex muskingumensis)
Sallow Sedge (Carex lurida)
Tussock Sedge (Carex stricta)
Cinnamon Fern (Osmundastrum cinnamomeum)
Sensitive Fern (Onoclea sensibilis)