Spotted Joe-Pye Weed
Eutrochium maculatum
A clay-buster — thrives in the slow-draining ground, 4–7 ft tall, flowering as it blooms Jul through Sep.
- Full–part sun
- Average–wet
- 4–7 ft
- Blooms Jul–Sep
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- North Dakota
- Clay soil
North Dakota · Zones 3–4
Native Plants for Clay Soil in North Dakota
Native plants that root happily into heavy clay — the dense, slow-draining soil that defeats so many garden-center perennials. North Dakota sits in a landscape of Northern mixedgrass prairie & Drift Prairie, and the natives that thrive here are the ones built for its cold, semi-arid character. The list below — led by Spotted Joe-Pye Weed and Culver's Root — is filtered to species genuinely native to North Dakota and the wider flora of the Great Plains and hardy through zones 3–4. 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
38 native species for North Dakota
Each one native to your region and hardy in zones 3–4 · see this collection in other states.
Culver's Root
Veronicastrum virginicum
A clay-buster — thrives in the slow-draining ground, 3–5 ft tall, flowering as it blooms Jun through Aug.
- Full–part sun
- Average–wet
- 3–5 ft
- Blooms Jun–Aug
Black-Eyed Susan
Rudbeckia hirta
A clay-buster — thrives in the slow-draining ground, 1.5–3 ft tall, flowering as it blooms Jun through Sep.
- Full–part sun
- Dry–average
- 1.5–3 ft
- Blooms Jun–Sep
Cup Plant
Silphium perfoliatum
Punches its roots through dense clay where garden-center perennials sulk, at 5–8 ft tall; it blooms Jul through Sep.
- Full–part sun
- Average–wet
- 5–8 ft
- Blooms Jul–Sep
Golden Alexanders
Zizia aurea
Punches its roots through dense clay where garden-center perennials sulk, at 1.5–2.5 ft tall — it blooms Apr through Jun.
- Full–part sun
- Average–wet
- 1.5–2.5 ft
- Blooms Apr–Jun
Dense Blazing Star
Liatris spicata
Roots straight into heavy clay and even improves it, standing 2–4 ft tall — it flowers in Jul and Aug.
- Full sun
- Average–wet
- 2–4 ft
- Blooms Jul–Aug
Serviceberry
Amelanchier canadensis
Roots straight into heavy clay and even improves it, standing 15–25 ft tall, flowering as it flowers in Apr and May.
- Full–part sun
- Average–wet
- 15–25 ft
- Blooms Apr–May
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
Obedient Plant
Physostegia virginiana
At home in the dense clay that defeats most perennials, 2–4 ft tall, and it flowers in Aug and Sep.
- Full–part sun
- Average–wet
- 2–4 ft
- Blooms Aug–Sep
Swamp Milkweed
Asclepias incarnata
A clay-buster — thrives in the slow-draining ground, 3–4 ft tall, and it flowers in Jul and Aug.
- Full–part sun
- Average–wet
- 3–4 ft
- Blooms Jul–Aug
Eastern Redbud
Cercis canadensis
Punches its roots through dense clay where garden-center perennials sulk, at 20–30 ft tall, and it flowers in Mar and Apr.
- Full–part sun
- Dry–average
- 20–30 ft
- Blooms Mar–Apr
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
Prairie Blazing Star
Liatris pycnostachya
Roots straight into heavy clay and even improves it, standing 3–5 ft tall, and it flowers in Jul and Aug.
- Full sun
- Dry–average
- 3–5 ft
- Blooms Jul–Aug
Aromatic Aster
Symphyotrichum oblongifolium
Roots straight into heavy clay and even improves it, standing 1.5–2.5 ft tall — 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, and it blooms Jun through Aug.
- Full sun
- Dry
- 1.5–2.5 ft
- Blooms Jun–Aug
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
Great Blue Lobelia
Lobelia siphilitica
Punches its roots through dense clay where garden-center perennials sulk, at 2–3 ft tall, and it flowers in Aug and Sep.
- Full–part sun
- Average–wet
- 2–3 ft
- Blooms Aug–Sep
Purple Coneflower
Echinacea purpurea
Punches its roots through dense clay where garden-center perennials sulk, at 2–4 ft tall — it blooms Jun through Sep.
- Full–part sun
- Dry–average
- 2–4 ft
- Blooms Jun–Sep
Common Yarrow
Achillea millefolium
Roots straight into heavy clay and even improves it, standing 1.5–3 ft tall; it blooms May through Aug.
- Full sun
- Dry–average
- 1.5–3 ft
- Blooms May–Aug
Maximilian Sunflower
Helianthus maximiliani
At home in the dense clay that defeats most perennials, 5–8 ft tall, flowering as it blooms Aug through Oct.
- Full sun
- Dry–average
- 5–8 ft
- Blooms Aug–Oct
Compass Plant
Silphium laciniatum
Punches its roots through dense clay where garden-center perennials sulk, at 5–9 ft tall; it flowers in Jul and Aug.
- Full sun
- Dry–average
- 5–9 ft
- Blooms Jul–Aug
Red-Twig Dogwood
Cornus sericea
Roots straight into heavy clay and even improves it, standing 6–9 ft tall, flowering as it flowers in May and Jun.
- Full–part sun
- Average–wet
- 6–9 ft
- Blooms May–Jun
Ninebark
Physocarpus opulifolius
A clay-buster — thrives in the slow-draining ground, 5–10 ft tall, flowering as it flowers in May and Jun.
- Full–part sun
- Dry to wet
- 5–10 ft
- Blooms May–Jun
Sideoats Grama
Bouteloua curtipendula
Roots straight into heavy clay and even improves it, standing 1.5–2.5 ft tall, and it flowers in Jun and Jul.
- Full sun
- Dry
- 1.5–2.5 ft
- Blooms Jun–Jul
14 more also qualify: Common Boneset, Blue Grama, Stiff Goldenrod, Virginia Creeper, Fragrant Sumac, Common Milkweed, American Elderberry, Showy Milkweed, Blue Vervain, Rattlesnake Master, Little Bluestem, Switchgrass, Indian Grass, Big Bluestem.
Sourcing
Where to find these in North Dakota
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.