Maximilian Sunflower
Helianthus maximiliani
Roots straight into heavy clay and even improves it, standing 5–8 ft tall, flowering as it blooms Aug through Oct.
- Full sun
- Dry–average
- 5–8 ft
- Blooms Aug–Oct
Kansas · Zones 5–7
Native Plants for Clay Soil in Kansas
Native plants that root happily into heavy clay — the dense, slow-draining soil that defeats so many garden-center perennials. For Kansas, the right natives are shaped by Flint Hills & mixedgrass prairie and a continental, windy, semi-arid west climate. Every species below, from Maximilian Sunflower and Aromatic Aster to the rest of the list, is genuinely native to Kansas and the wider flora of the Great Plains and hardy through zones 5–7. Heavy clay is actually fertile and moisture-holding; the trick is choosing plants whose deep, muscular roots can punch through it and even improve it over time. Avoid working clay when it is wet, plant a little high to keep crowns from sitting in water, and mulch to keep the surface from baking into a crust. These natives do the soil-building for you.
The plants
39 native species for Kansas
Each one native to your region and hardy in zones 5–7 · see this collection in other states.
Aromatic Aster
Symphyotrichum oblongifolium
Punches its roots through dense clay where garden-center perennials sulk, at 1.5–2.5 ft tall, flowering as it blooms Sep through Nov.
- Full sun
- Dry
- 1.5–2.5 ft
- Blooms Sep–Nov
Butterfly Weed
Asclepias tuberosa
Punches its roots through dense clay where garden-center perennials sulk, at 1.5–2.5 ft tall, flowering as it blooms Jun through Aug.
- Full sun
- Dry
- 1.5–2.5 ft
- Blooms Jun–Aug
Great Blue Lobelia
Lobelia siphilitica
At home in the dense clay that defeats most perennials, 2–3 ft tall — it flowers in Aug and Sep.
- Full–part sun
- Average–wet
- 2–3 ft
- Blooms Aug–Sep
Foxglove Beardtongue
Penstemon digitalis
A clay-buster — thrives in the slow-draining ground, 2–4 ft tall, and it flowers in May and Jun.
- Full–part sun
- Dry–average
- 2–4 ft
- Blooms May–Jun
Obedient Plant
Physostegia virginiana
At home in the dense clay that defeats most perennials, 2–4 ft tall, flowering as it flowers in Aug and Sep.
- Full–part sun
- Average–wet
- 2–4 ft
- Blooms Aug–Sep
Spotted Joe-Pye Weed
Eutrochium maculatum
At home in the dense clay that defeats most perennials, 4–7 ft tall — it blooms Jul through Sep.
- Full–part sun
- Average–wet
- 4–7 ft
- Blooms Jul–Sep
Cup Plant
Silphium perfoliatum
A clay-buster — thrives in the slow-draining ground, 5–8 ft tall — it blooms Jul through Sep.
- Full–part sun
- Average–wet
- 5–8 ft
- Blooms Jul–Sep
Serviceberry
Amelanchier canadensis
Punches its roots through dense clay where garden-center perennials sulk, at 15–25 ft tall — it flowers in Apr and May.
- Full–part sun
- Average–wet
- 15–25 ft
- Blooms Apr–May
Culver's Root
Veronicastrum virginicum
A clay-buster — thrives in the slow-draining ground, 3–5 ft tall — it blooms Jun through Aug.
- Full–part sun
- Average–wet
- 3–5 ft
- Blooms Jun–Aug
Buttonbush
Cephalanthus occidentalis
Roots straight into heavy clay and even improves it, standing 5–10 ft tall, and it blooms Jun through Aug.
- Full–part sun
- Average–wet
- 5–10 ft
- Blooms Jun–Aug
Wild Bergamot
Monarda fistulosa
A clay-buster — thrives in the slow-draining ground, 2–4 ft tall — it blooms Jun through Aug.
- Full–part sun
- Dry–average
- 2–4 ft
- Blooms Jun–Aug
Common Yarrow
Achillea millefolium
Punches its roots through dense clay where garden-center perennials sulk, at 1.5–3 ft tall; it blooms May through Aug.
- Full sun
- Dry–average
- 1.5–3 ft
- Blooms May–Aug
Prairie Blazing Star
Liatris pycnostachya
A clay-buster — thrives in the slow-draining ground, 3–5 ft tall — it flowers in Jul and Aug.
- Full sun
- Dry–average
- 3–5 ft
- Blooms Jul–Aug
Golden Alexanders
Zizia aurea
Roots straight into heavy clay and even improves it, standing 1.5–2.5 ft tall — it blooms Apr through Jun.
- Full–part sun
- Average–wet
- 1.5–2.5 ft
- Blooms Apr–Jun
Eastern Redbud
Cercis canadensis
Punches its roots through dense clay where garden-center perennials sulk, at 20–30 ft tall; it flowers in Mar and Apr.
- Full–part sun
- Dry–average
- 20–30 ft
- Blooms Mar–Apr
Black-Eyed Susan
Rudbeckia hirta
At home in the dense clay that defeats most perennials, 1.5–3 ft tall, and it blooms Jun through Sep.
- Full–part sun
- Dry–average
- 1.5–3 ft
- Blooms Jun–Sep
Dense Blazing Star
Liatris spicata
At home in the dense clay that defeats most perennials, 2–4 ft tall, flowering as it flowers in Jul and Aug.
- Full sun
- Average–wet
- 2–4 ft
- Blooms Jul–Aug
Purple Coneflower
Echinacea purpurea
At home in the dense clay that defeats most perennials, 2–4 ft tall, flowering as it blooms Jun through Sep.
- Full–part sun
- Dry–average
- 2–4 ft
- Blooms Jun–Sep
New England Aster
Symphyotrichum novae-angliae
A clay-buster — thrives in the slow-draining ground, 3–5 ft tall — it flowers in Sep and Oct.
- Full–part sun
- Average–wet
- 3–5 ft
- Blooms Sep–Oct
Swamp Milkweed
Asclepias incarnata
A clay-buster — thrives in the slow-draining ground, 3–4 ft tall, flowering as it flowers in Jul and Aug.
- Full–part sun
- Average–wet
- 3–4 ft
- Blooms Jul–Aug
Blue Vervain
Verbena hastata
A clay-buster — thrives in the slow-draining ground, 3–5 ft tall, and it blooms Jul through Sep.
- Full–part sun
- Average–wet
- 3–5 ft
- Blooms Jul–Sep
Fragrant Sumac
Rhus aromatica
Punches its roots through dense clay where garden-center perennials sulk, at 2–6 ft tall, flowering as it flowers in Mar and Apr.
- Full–part sun
- Dry
- 2–6 ft
- Blooms Mar–Apr
American Elderberry
Sambucus canadensis
A clay-buster — thrives in the slow-draining ground, 6–12 ft tall — it flowers in Jun and Jul.
- Full–part sun
- Average–wet
- 6–12 ft
- Blooms Jun–Jul
15 more also qualify: Red-Twig Dogwood, Virginia Creeper, Compass Plant, Stiff Goldenrod, Common Boneset, Rattlesnake Master, Sideoats Grama, Blue Grama, Ninebark, Common Milkweed, Showy Milkweed, Big Bluestem, Indian Grass, Switchgrass, Little Bluestem.
Sourcing
Where to find these in Kansas
Seeds & live plants on Amazon
Seed packets, plugs, and starter plants for many of these species ship to your door.
Browse on AmazonSome links here are affiliate links — we may earn a small commission at no extra cost to you. The surest source of locally-adapted stock is a native-plant nursery or a native plant society sale in your area.