Best Plants for Clay Soil
Clay soil is really much more of a problem for gardeners than it is for plants.
Clay soil may be tough for a gardener to work, but it holds water and nutrients well. Those are big advantages for plants. There are a great deal of plants that love clay soil, and even more that tolerate it very well.
Aster: Full sun; zones 4-8
Astilbe: Shade/part shade; zones 3-8
Bearded Iris (German Iris): Late spring blooms, zones 3-9
Bee Balm (Monarda); full sun; zones 4-8
Blackeyed Susan (Rudbeckia): Full sun; zones 4-9
Blue Cardinal Flower (Lobelia): Shade; zones 3-9
Butterfly Bush (Buddleia): Full sun; zones 5-9
Chokecherry shrub (Aronia): Full sun/part shade; zones 3-7
Coneflower (Echinacea): Full sun; zones 3-9
Daylily: Full sun; zones 3-9
Dogwood shrub: Full sun/shade; zones 2-8
Elderberry shrub: Full sun/part shade; zones 4-7
Flowering Quince shrub: Full sun/part shade; zones 4-8
Hosta: Shade; zones 3-9
Joe Pye Weed; Full sun; zones 4-8
Liatris; Full sun; zones 4-8
Lilac shrub: Full sun to part shade; zones 3-7
Phlox: Full sun; zones 4-8
Potentilla shrub: Full sun; zones 2-6
Rose of Sharon Hibiscus shrub (Althea): Full sun/part shade; zones 5-9
Sedum: Full sun; zones 4-8
Smooth Hydrangea (arborescens) shrub: Part shade; zones 3-9
Viburnum: Full sun; zones 5-8
Weigela shrub: Full sun/part shade/ zones 4-8
These are all readily available and easy to grow garden plants. There are also many prairie flowers that will do very well in clay, but may spread aggressively.