Native Plants for Iowa - What to Plant, and When
Iowa spans 2 ecoregions:Great PlainsEastern Temperate Forests
243 plants on this site are native to Iowa, 46 of them keystone species that feed the most caterpillars and bees. Iowa spans 2 ecoregions (Great Plains, Eastern Temperate Forests), and the plants here are the ones that evolved in them. Hardiness zones in the state run 4b to 6a, which is why the list sorts by zone rather than by state.
Start with the keystones (an oak or native cherry if you have room, then goldenrods, asters and milkweeds), and plant in early fall or early spring, at least six weeks before a frost. Pick your zone above and each plant shows its own sowing and bloom window for where you garden.

American Plum
Prunus americana
Zones 3a–8b · native to 43 states and provinces
Blooms Mar – Apr in zone 5b

Baldwin's Ironweed
Vernonia baldwinii
Zones 4a–8b · native to 15 states
Blooms Jul – Sep in zone 5b

Black Cherry
Prunus serotina
Zones 3a–9a · native to 46 states and provinces
Blooms Apr – May in zone 5b

Black Oak
Quercus velutina
Zones 4b–9a · native to 36 states and provinces

Black-Eyed Susan
Rudbeckia hirta
Zones 3a–9b · native to 50 states and provinces
Blooms Jun – Oct in zone 5b

Boxelder
Acer negundo
Zones 2a–9b · native to 48 states and provinces

Brown-eyed Susan
Rudbeckia triloba
Zones 3a–7b · native to 26 states
Blooms Jul – Sep in zone 5b

Bur Oak
Quercus macrocarpa
Zones 3a–8b · native to 34 states and provinces

Calico Aster
Symphyotrichum lateriflorum
Zones 3a–8b · native to 43 states and provinces
Blooms Aug – Oct in zone 5b

Campfire Rudbeckia
Rudbeckia hirta 'Campfire'
Zones 3a–7b · native to 50 states and provinces
Blooms Jun – Oct in zone 5b

Camphorweed
Heterotheca subaxillaris
Zones 6a–10b · native to 31 states
Blooms Jul – Sep in zone 5b

Chokecherry
Prunus virginiana
Zones 2a–7b · native to 55 states and provinces
Blooms Apr – May in zone 5b

Cowpen Daisy
Verbesina encelioides
Zones 5a–10b · native to 26 states
Blooms Jun – Oct in zone 5b

Curlycup Gumweed
Grindelia squarrosa
Zones 3a–9a · native to 44 states and provinces
Blooms Jun – Aug in zone 5b

Eastern White Pine
Pinus strobus
Zones 3a–8b · native to 32 states and provinces

Giant Ironweed
Vernonia gigantea
Zones 5a–9b · native to 35 states and provinces
Blooms Jul – Sep in zone 5b

Giant Sunflower
Helianthus giganteus
Zones 3a–8b · native to 32 states and provinces
Blooms Jul – Oct in zone 5b

Goldenrod
Solidago canadensis
Zones 3a–9a · native to 57 states and provinces
Blooms Jul – Oct in zone 5b

Missouri Ironweed
Vernonia missurica
Zones 4a–8b · native to 14 states and provinces
Blooms Jul – Sep in zone 5b

New England Aster
Symphyotrichum novae-angliae
Zones 3a–8b · native to 44 states and provinces
Blooms Aug – Oct in zone 5b

Northern Red Oak
Quercus rubra
Zones 3b–8a · native to 38 states and provinces

Orange Coneflower
Rudbeckia fulgida
Zones 4a–9a · native to 26 states
Blooms Jul – Aug in zone 5b

Pin Cherry
Prunus pensylvanica
Zones 2a–6b · native to 43 states and provinces
Blooms Apr – May in zone 5b

Pin Oak
Quercus palustris
Zones 4b–8b · native to 29 states and provinces

Post Oak
Quercus stellata
Zones 5b–9a · native to 29 states

Prairie Crabapple
Malus ioensis
Zones 3b–8a · native to 11 states
Blooms Apr – May in zone 5b

Prairie Ironweed
Vernonia fasciculata
Zones 3a–8b · native to 19 states and provinces
Blooms Jul – Sep in zone 5b

Prairie Willow
Salix humilis
Zones 2a–8b · native to 45 states and provinces
Blooms Feb – Apr in zone 5b

Quaking Aspen
Populus tremuloides
Zones 2a–6b · native to 49 states and provinces

Red Maple
Acer rubrum
Zones 3a–9b · native to 40 states and provinces
Blooms Mar – Apr in zone 5b

River Birch
Betula nigra
Zones 4a–9a · native to 27 states

Sandbar Willow
Salix interior
Zones 2a–9b · native to 57 states and provinces
Blooms Mar – Apr in zone 5b

Shagbark Hickory
Carya ovata
Zones 4a–8b · native to 36 states and provinces

Shumard Oak
Quercus shumardii
Zones 5b–9b · native to 24 states and provinces

Silver Maple
Acer saccharinum
Zones 3a–9a · native to 40 states and provinces

Sky Blue Aster
Symphyotrichum oolentangiense
Zones 3a–9b · native to 20 states and provinces
Blooms Sep – Nov in zone 5b

Smooth Violet Prairie Aster
Symphyotrichum turbinellum
Zones 4a–8b · native to 8 states
Blooms Aug – Oct in zone 5b

Sugar Maple
Acer saccharum
Zones 3a–8a · native to 42 states and provinces

Sunflower
Helianthus annuus
Zones 2a–11b · native to 22 states
Blooms Jun – Sep in zone 5b

Swamp White Oak
Quercus bicolor
Zones 4a–8b · native to 32 states and provinces

Tall Tickseed
Coreopsis tripteris
Zones 4a–9b · native to 28 states and provinces
Blooms Aug – Nov in zone 5b

Tickseed
Coreopsis lanceolata
Zones 3a–9b · native to 38 states and provinces
Blooms Jun – Sep in zone 5b

White Oak
Quercus alba
Zones 3b–8b · native to 38 states and provinces

Wild Aster
Symphyotrichum pilosum
Zones 4a–8b · native to 40 states and provinces
Blooms Aug – Nov in zone 5b

Wingstem
Verbesina alternifolia
Zones 4a–8b · native to 31 states and provinces
Blooms Jul – Sep in zone 5b

Wreath Goldenrod
Solidago caesia
Zones 4a–8b · native to 36 states and provinces
Blooms Aug – Oct in zone 5b

'Golden Jubilee' Agastache
Agastache foeniculum 'Golden Jubilee'
Zones 4a–9a · native to 22 states and provinces
Blooms Jul – Sep in zone 5b

Agastache
Agastache foeniculum
Zones 4a–9a · native to 22 states and provinces
Blooms Jul – Sep in zone 5b

Alum Root
Heuchera americana
Zones 3a–8b · native to 36 states and provinces
Blooms May – Jul in zone 5b

American Bellflower
Campanula americana
Zones 4a–8a · native to 29 states and provinces
Blooms Jun – Aug in zone 5b

American Cranberrybush
Viburnum opulus var. americanum
Zones 2a–7b · native to 35 states and provinces
Blooms May – Jun in zone 5b

American Elm
Ulmus americana
Zones 3a–9a · native to 46 states and provinces

American Hornbeam
Carpinus caroliniana
Zones 3a–9a · native to 38 states and provinces

American Linden
Tilia americana
Zones 3a–8b · native to 42 states and provinces
Blooms Jun – Jul in zone 5b

American Lotus
Nelumbo lutea
Zones 4a–10b · native to 30 states and provinces
Blooms Jun – Aug in zone 5b

American Persimmon
Diospyros virginiana
Zones 4b–9b · native to 28 states

American Vetch
Vicia americana
Zones 3a–9b · native to 49 states and provinces
Blooms May – Jul in zone 5b

American White Water Lily
Nymphaea odorata
Zones 3a–11b · native to 56 states and provinces
Blooms Jun – Sep in zone 5b

American Wisteria
Wisteria frutescens
Zones 5a–9b · native to 24 states
Blooms Jun – Jul in zone 5b

American Witch Hazel
Hamamelis virginiana
Zones 3a–8b · native to 36 states and provinces
Blooms Oct – Jan in zone 5b

Arrowwood Viburnum
Viburnum dentatum
Zones 3a–8b · native to 37 states and provinces
Blooms May – Jun in zone 5b

Balsam Fir
Abies balsamea
Zones 3a–6a · native to 22 states and provinces

Beaujolais Fringed Loosestrife
Lysimachia ciliata 'Beaujolais'
Zones 3a–8b · native to 53 states and provinces
Blooms Jun – Aug in zone 5b

Big Bluestem
Andropogon gerardii
Zones 3a–9b · native to 44 states
Blooms Jul – Oct in zone 5b

Big Bluestem 'Holy Smoke'
Andropogon gerardii
Zones 3a–9b · native to 44 states
Blooms Jul – Oct in zone 5b

Black Ash
Fraxinus nigra
Zones 2b–6b · native to 24 states and provinces

Black Raspberry
Rubus occidentalis
Zones 4a–8b · native to 37 states and provinces
Blooms May – Jun in zone 5b

Black Walnut
Juglans nigra
Zones 4a–9a · native to 34 states and provinces

Blackhaw Viburnum
Viburnum prunifolium
Zones 3b–9a · native to 28 states
Blooms May – Jun in zone 5b

Blazing Star
Liatris spicata
Zones 3a–9a · native to 37 states and provinces
Blooms Jun – Aug in zone 5b

Bloodroot
Sanguinaria canadensis
Zones 3a–8b · native to 42 states and provinces
Blooms Mar – Apr in zone 5b

Blue Cohosh
Caulophyllum thalictroides
Zones 3a–8a · native to 39 states and provinces
Blooms Apr – May in zone 5b

Blue Grama
Bouteloua gracilis
Zones 3a–10b · native to 26 states and provinces
Blooms Jun – Sep in zone 5b

Blue Vervain
Verbena hastata
Zones 3a–8b · native to 57 states and provinces
Blooms Jul – Sep in zone 5b

Blue Waxweed
Cuphea viscosissima
Zones 3a–9a · native to 28 states
Blooms Jun – Aug in zone 5b

Blue-fruited Dogwood
Cornus obliqua
Zones 4a–8b · native to 25 states and provinces
Blooms Jun – Jul in zone 5b

Bluejoint
Calamagrostis canadensis
Zones 2a–7b · native to 51 states and provinces
Blooms Jun – Aug in zone 5b

Boneset
Eupatorium perfoliatum
Zones 3a–8b · native to 44 states and provinces
Blooms Jul – Sep in zone 5b

Bottle Gentian
Gentiana andrewsii
Zones 3a–7b · native to 27 states and provinces
Blooms Jul – Sep in zone 5b

Broadleaf Arrowhead
Sagittaria latifolia
Zones 3a–10b · native to 50 states and provinces
Blooms Jun – Jul in zone 5b

Broadleaf Cattail
Typha latifolia
Zones 3a–10b · native to 60 states and provinces

Bulblet Bladder Fern
Cystopteris bulbifera
Zones 3a–8a · native to 34 states and provinces
Blooms Apr – Oct in zone 5b

Butterfly Weed
Asclepias tuberosa
Zones 3a–9a · native to 43 states and provinces
Blooms Jun – Aug in zone 5b

Buttonbush
Cephalanthus occidentalis
Zones 5a–9b · native to 43 states and provinces
Blooms Jul – Aug in zone 5b

Canada Wild Rye
Elymus canadensis
Zones 3a–9b · native to 46 states and provinces
Blooms Jun – Aug in zone 5b

Cardinal Flower
Lobelia cardinalis
Zones 3a–9a · native to 41 states and provinces
Blooms Jul – Sep in zone 5b

Carolina Geranium
Geranium carolinianum
Zones 3a–9b · native to 53 states and provinces
Blooms Mar – Aug in zone 5b

Carolina Rose
Rosa carolina
Zones 4a–9b · native to 42 states and provinces
Blooms May – Jul in zone 5b

Christmas Fern
Polystichum acrostichoides
Zones 3a–9a · native to 42 states and provinces
Blooms Mar – Oct in zone 5b

Clove Currant
Ribes odoratum
Zones 4a–8b · native to 12 states
Blooms May – Jun in zone 5b

Clustered Field Sedge
Carex praegracilis
Zones 4a–9b · native to 25 states and provinces
Blooms Apr – Jun in zone 5b

Cockspur Hawthorn
Crataegus crus-galli
Zones 4a–7b · native to 38 states and provinces
Blooms May – May in zone 5b

Common Blue Violet
Viola sororia
Zones 3a–9a · native to 41 states and provinces
Blooms Mar – Jun in zone 5b

Common Evening Primrose
Oenothera biennis
Zones 3a–9b · native to 53 states and provinces
Blooms Jun – Oct in zone 5b

Common Hackberry
Celtis occidentalis
Zones 2a–9a · native to 38 states and provinces

Common Hoptree
Ptelea trifoliata
Zones 3a–9b · native to 36 states and provinces
Blooms May – Jun in zone 5b

Common Milkweed
Asclepias syriaca
Zones 3a–9a · native to 43 states and provinces
Blooms Jun – Aug in zone 5b

Common Sneezeweed
Helenium autumnale
Zones 3a–8b · native to 51 states and provinces
Blooms Jul – Sep in zone 5b

Common Snowberry
Symphoricarpos albus
Zones 3a–7b · native to 45 states and provinces
Blooms Jun – Jul in zone 5b

Compass Plant
Silphium laciniatum
Zones 3a–9a · native to 25 states and provinces
Blooms Jul – Sep in zone 5b

Coral Honeysuckle
Lonicera sempervirens
Zones 4a–9b · native to 29 states
Blooms Aug – Jan in zone 5b

Cream Wild Indigo
Baptisia bracteata var. leucophaea
Zones 4a–8b · native to 16 states
Blooms Apr – Jun in zone 5b

Creeping Juniper
Juniperus horizontalis
Zones 3a–9a · native to 28 states and provinces

Culver's Root
Veronicastrum virginicum
Zones 3a–8b · native to 36 states and provinces
Blooms Jul – Aug in zone 5b

Culver's Root 'Challenger'
Veronicastrum virginicum
Zones 3a–8b · native to 36 states and provinces
Blooms Jul – Aug in zone 5b

Cup Plant
Silphium perfoliatum
Zones 3a–9a · native to 37 states and provinces
Blooms Jul – Sep in zone 5b

Deceitful Pussytoes
Antennaria parlinii ssp. fallax
Zones 3a–8b · native to 43 states and provinces
Blooms Mar – May in zone 5b

Doll's Eyes
Actaea pachypoda
Zones 3a–8a · native to 31 states and provinces
Blooms May – Jun in zone 5b

Dotted Blazing Star
Liatris punctata
Zones 3a–9b · native to 16 states and provinces
Blooms Jul – Oct in zone 5b

Downy Serviceberry
Amelanchier arborea
Zones 4a–9a · native to 40 states and provinces
Blooms Mar – Apr in zone 5b

Dwarf Wild Indigo
Baptisia australis var. minor
Zones 4a–8b · native to 7 states
Blooms Apr – Jun in zone 5b

Eastern Gamagrass
Tripsacum dactyloides
Zones 4a–10b · native to 29 states
Blooms Jul – Oct in zone 5b

Elderberry
Sambucus canadensis
Zones 3a–9a · native to 43 states and provinces
Blooms May – Jul in zone 5b

False Solomon's Seal
Maianthemum racemosum
Zones 3a–8b · native to 57 states and provinces
Blooms May – Jun in zone 5b

False Sunflower
Heliopsis helianthoides
Zones 3a–9a · native to 42 states and provinces
Blooms Jul – Sep in zone 5b

Field Thistle
Cirsium discolor
Zones 3a–8b · native to 37 states and provinces
Blooms Jul – Oct in zone 5b

Foxglove Beardtongue
Penstemon digitalis
Zones 3a–8b · native to 36 states
Blooms Jun – Jul in zone 5b

Fringed Gentian
Gentianopsis crinita
Zones 3a–7b · native to 22 states and provinces
Blooms Aug – Sep in zone 5b

Ghost Pipe
Monotropa uniflora
Zones 3a–9b · native to 47 states and provinces
Blooms Jul – Sep in zone 5b

Goat's Beard
Aruncus dioicus
Zones 3a–7b · native to 36 states and provinces
Blooms Jun – Jul in zone 5b

Golden Alexander
Zizia aurea
Zones 3a–8b · native to 43 states and provinces
Blooms Apr – Jun in zone 5b

Golden Ragwort
Packera aurea
Zones 3a–8b · native to 44 states and provinces
Blooms Apr – May in zone 5b

Grape Honeysuckle
Lonicera reticulata
Zones 4a–8a · native to 15 states
Blooms Sep – Oct in zone 5b

Gray Alder
Alnus incana
Zones 3a–6b · native to 44 states and provinces

Gray Dogwood
Cornus racemosa
Zones 4a–8b · native to 35 states and provinces
Blooms Jun – Jul in zone 5b

Gray-Headed Coneflower
Ratibida pinnata
Zones 3a–9b · native to 28 states and provinces
Blooms Jul – Sep in zone 5b

Great Blue Lobelia
Lobelia siphilitica
Zones 4a–9a · native to 39 states and provinces
Blooms Jul – Sep in zone 5b

Green Ash
Fraxinus pennsylvanica
Zones 3a–9a · native to 47 states and provinces

Gro-low Fragrant Sumac
Rhus aromatica 'Gro-low'
Zones 2a–8b · native to 33 states and provinces

Hairy Sweet Cicely
Osmorhiza claytonii
Zones 3a–8b · native to 39 states and provinces
Blooms Apr – Jun in zone 5b

Harebell
Campanula rotundifolia
Zones 2a–7b · native to 49 states and provinces
Blooms Jun – Aug in zone 5b

Hay-scented Fern
Dennstaedtia punctilobula
Zones 3a–8a · native to 32 states and provinces
Blooms Apr – Oct in zone 5b

Honeylocust
Gleditsia triacanthos
Zones 4a–9a · native to 32 states and provinces

Horsetail
Equisetum hyemale
Zones 3a–11b · native to 61 states and provinces
Blooms Apr – Apr in zone 5b

Indian Grass
Sorghastrum nutans
Zones 4a–9a · native to 48 states and provinces
Blooms Aug – Nov in zone 5b

Jacob's Ladder
Polemonium reptans
Zones 3a–8b · native to 27 states
Blooms May – Jul in zone 5b

Joe Pye Weed
Eutrochium purpureum
Zones 4a–9a · native to 36 states and provinces
Blooms Jul – Oct in zone 5b

Juniper Bush
Juniperus communis
Zones 2a–6b · native to 49 states and provinces

Juniper Tree
Juniperus virginiana
Zones 2a–9a · native to 40 states and provinces

Kinnikinnick
Arctostaphylos uva-ursi
Zones 2a–8b · native to 42 states and provinces
Blooms Apr – Jun in zone 5b

Lady Fern
Athyrium filix-femina
Zones 4a–8b · native to 46 states
Blooms Apr – Oct in zone 5b

Large Beardtongue
Penstemon grandiflorus
Zones 3a–8b · native to 15 states and provinces
Blooms May – Jul in zone 5b

Large-Flowered Bellwort
Uvularia grandiflora
Zones 3a–8b · native to 38 states and provinces
Blooms Apr – May in zone 5b

Lavender Twist Redbud
Cercis canadensis 'Lavender Twist'
Zones 5a–9a · native to 31 states
Blooms Mar – Apr in zone 5b

Leadplant
Amorpha canescens
Zones 2b–9b · native to 20 states and provinces
Blooms Jun – Aug in zone 5b

Limber Honeysuckle
Lonicera dioica
Zones 3b–8a · native to 40 states and provinces
Blooms Aug – Oct in zone 5b

Little Bluestem
Schizachyrium scoparium
Zones 3a–9a · native to 51 states and provinces
Blooms Aug – Oct in zone 5b

Little Bluestem 'Blue Heaven'
Schizachyrium scoparium
Zones 3a–9a · native to 51 states and provinces
Blooms Aug – Oct in zone 5b

Little Bluestem 'Twilight Zone'
Schizachyrium scoparium
Zones 3a–9a · native to 51 states and provinces
Blooms Aug – Oct in zone 5b

Low Serviceberry
Amelanchier humilis
Zones 2a–6b · native to 18 states and provinces
Blooms Mar – Apr in zone 5b

Maidenhair Fern
Adiantum pedatum
Zones 3a–8a · native to 35 states and provinces
Blooms Apr – Oct in zone 5b

Mapleleaf Viburnum
Viburnum acerifolium
Zones 3a–8a · native to 33 states and provinces
Blooms May – Jun in zone 5b

Marsh Marigold
Caltha palustris
Zones 3a–7b · native to 41 states and provinces
Blooms Apr – May in zone 5b

Mayapple
Podophyllum peltatum
Zones 3a–8b · native to 39 states and provinces
Blooms Apr – May in zone 5b

Meadow Phlox
Phlox maculata
Zones 3b–8b · native to 29 states
Blooms Jun – Aug in zone 5b

Michigan Lily
Lilium michiganense
Zones 3a–8a · native to 15 states and provinces
Blooms Jun – Aug in zone 5b

Mountain Mint
Pycnanthemum virginianum
Zones 3a–8b · native to 40 states and provinces
Blooms Jul – Aug in zone 5b

Nannyberry
Viburnum lentago
Zones 2b–8a · native to 33 states and provinces
Blooms May – Jun in zone 5b

Narrowleaf Coneflower
Echinacea angustifolia
Zones 3a–8b · native to 15 states and provinces
Blooms Oct – Nov in zone 5b

New Jersey Tea
Ceanothus americanus
Zones 4a–8b · native to 39 states and provinces
Blooms May – Jun in zone 5b

Ninebark
Physocarpus opulifolius
Zones 2b–7b · native to 38 states and provinces
Blooms May – Jun in zone 5b

Nodding Bur Marigold
Bidens cernua
Zones 3a–9b · native to 57 states and provinces
Blooms Jul – Sep in zone 5b

Nodding Onion
Allium cernuum
Zones 3a–9a · native to 42 states and provinces
Blooms Jul – Aug in zone 5b

Northern Bush Honeysuckle
Diervilla lonicera
Zones 3a–7b · native to 32 states and provinces
Blooms Jun – Jul in zone 5b

Northern Prickly Ash
Zanthoxylum americanum
Zones 3a–7b · native to 35 states and provinces

Obedient Plant
Physostegia virginiana
Zones 2b–9a · native to 40 states and provinces
Blooms Jul – Sep in zone 5b

Obedient Plant 'Crystal Peak White'
Physostegia virginiana 'Crystal Peak White'
Zones 4a–9b · native to 40 states and provinces
Blooms Jul – Sep in zone 5b

Ostrich Fern
Matteuccia struthiopteris
Zones 3a–7b · native to 23 states
Blooms Apr – Oct in zone 5b

Pagoda Dogwood
Cornus alternifolia
Zones 3a–7b · native to 37 states and provinces
Blooms May – Jun in zone 5b

Pale Gentian
Gentiana alba
Zones 3a–8b · native to 26 states and provinces
Blooms Jul – Sep in zone 5b

Pawpaw
Asimina triloba
Zones 5a–9b · native to 28 states and provinces
Blooms Apr – May in zone 5b

Pennsylvania Sedge
Carex pensylvanica
Zones 3a–8a · native to 38 states and provinces
Blooms Apr – May in zone 5b

Pickerelweed
Pontederia cordata
Zones 3a–10b · native to 38 states and provinces
Blooms Jul – Oct in zone 5b

Prairie Blazing Star
Liatris pycnostachya
Zones 3a–9a · native to 18 states
Blooms Jun – Aug in zone 5b

Prairie Coneflower
Ratibida columnifera
Zones 3a–10b · native to 30 states and provinces
Blooms Jun – Oct in zone 5b

Prairie Dock
Silphium terebinthinaceum
Zones 4a–8b · native to 20 states and provinces
Blooms Jul – Sep in zone 5b

Prairie Dropseed
Sporobolus heterolepis
Zones 3a–9b · native to 25 states and provinces
Blooms Jul – Oct in zone 5b

Prairie Dropseed 'Cloud'
Sporobolus heterolepis 'Cloud'
Zones 3a–9b · native to 20 states and provinces
Blooms Jul – Sep in zone 5b

Prairie Junegrass
Koeleria macrantha
Zones 3a–9b · native to 31 states and provinces
Blooms May – Jul in zone 5b

Prairie Phlox
Phlox pilosa
Zones 4a–9b · native to 35 states and provinces
Blooms May – Jun in zone 5b

Prairie Rose
Rosa arkansana
Zones 3a–8b · native to 22 states and provinces
Blooms Jun – Jul in zone 5b

Purple Coneflower
Echinacea purpurea
Zones 3a–9b · native to 35 states
Blooms Jul – Sep in zone 5b

Purple Lovegrass
Eragrostis spectabilis
Zones 5a–9b · native to 39 states and provinces
Blooms Aug – Oct in zone 5b

Purple Pitcher Plant
Sarracenia purpurea
Zones 3a–9b · native to 39 states and provinces
Blooms Apr – May in zone 5b

Purple Poppy Mallow
Callirhoe involucrata
Zones 3a–9b · native to 13 states
Blooms May – Sep in zone 5b

Purple Prairie Clover
Dalea purpurea
Zones 3a–9b · native to 29 states and provinces
Blooms Jun – Sep in zone 5b

Purpletop
Tridens flavus
Zones 3a–9b · native to 29 states
Blooms Aug – Nov in zone 5b

Queen of the Prairie
Filipendula rubra
Zones 3a–9b · native to 14 states
Blooms Jun – Aug in zone 5b

Red Mulberry
Morus rubra
Zones 4b–9a · native to 34 states and provinces

Red-twig Dogwood
Cornus sericea
Zones 2a–7b · native to 53 states and provinces
Blooms May – Jun in zone 5b

Redbud
Cercis canadensis
Zones 4b–9a · native to 31 states
Blooms Mar – Apr in zone 5b

Roughleaf Dogwood
Cornus drummondii
Zones 4a–8b · native to 18 states and provinces
Blooms May – Jul in zone 5b

Round-leaved Dogwood
Cornus rugosa
Zones 3a–7b · native to 25 states and provinces
Blooms May – Jun in zone 5b

Round-lobed Hepatica
Hepatica americana
Zones 3a–8a · native to 34 states and provinces
Blooms Mar – Apr in zone 5b

Royal Fern
Osmunda regalis
Zones 3a–9a · native to 34 states
Blooms Apr – Oct in zone 5b

Ruby Falls Redbud
Cercis canadensis 'Ruby Falls'
Zones 5a–9a · native to 31 states
Blooms Mar – Apr in zone 5b

Sassafras
Sassafras albidum
Zones 4a–9b · native to 34 states and provinces
Blooms Apr – May in zone 5b

Seersucker Sedge
Carex plantaginea
Zones 3a–8a · native to 29 states and provinces
Blooms Apr – May in zone 5b

Serviceberry
Amelanchier canadensis
Zones 3a–7b · native to 53 states and provinces
Blooms Mar – Apr in zone 5b

Shooting Star
Primula meadia
Zones 4a–8b · native to 28 states and provinces
Blooms Apr – May in zone 5b

Showy Milkweed
Asclepias speciosa
Zones 3a–9b · native to 24 states and provinces
Blooms Oct – Dec in zone 5b

Shrubby Cinquefoil
Dasiphora fruticosa
Zones 2a–7b · native to 43 states and provinces
Blooms May – Sep in zone 5b

Sideoats Grama
Bouteloua curtipendula
Zones 3a–10b · native to 25 states
Blooms Jul – Sep in zone 5b

Smooth Beardtongue
Penstemon calycosus
Zones 4a–8b · native to 33 states
Blooms Jun – Jul in zone 5b

Soapweed Yucca
Yucca glauca
Zones 3a–9a · native to 12 states and provinces
Blooms Jul – Aug in zone 5b

Soft Rush
Juncus effusus
Zones 4a–9b · native to 55 states and provinces
Blooms May – Jul in zone 5b

Solomon's Seal 'Prince Charming'
Polygonatum biflorum
Zones 3a–8b · native to 40 states and provinces
Blooms Apr – May in zone 5b

Solomon's Seal (Native)
Polygonatum biflorum
Zones 3a–8b · native to 40 states and provinces
Blooms Apr – May in zone 5b

Spicebush
Lindera benzoin
Zones 4a–9a · native to 38 states and provinces
Blooms Feb – Mar in zone 5b

Spiderwort
Tradescantia ohiensis
Zones 4a–9a · native to 38 states and provinces
Blooms May – Jul in zone 5b

Spotted Bee Balm
Monarda punctata
Zones 3a–9b · native to 38 states and provinces
Blooms Jul – Sep in zone 5b

Spotted Joe Pye Weed
Eutrochium maculatum
Zones 3a–8b · native to 46 states and provinces
Blooms Jul – Sep in zone 5b

Sundial Lupine
Lupinus perennis
Zones 3a–8a · native to 34 states and provinces
Blooms May – Jul in zone 5b

Swamp Milkweed
Asclepias incarnata
Zones 3a–9a · native to 45 states and provinces
Blooms Jul – Aug in zone 5b

Sweet Everlasting
Pseudognaphalium obtusifolium
Zones 3a–9b · native to 41 states and provinces
Blooms Aug – Nov in zone 5b

Sweet Flag
Acorus americanus
Zones 3a–7b · native to 41 states and provinces

Switchgrass 'Cheyenne Sky'
Panicum virgatum
Zones 4a–9a · native to 49 states and provinces
Blooms Jul – Oct in zone 5b

Switchgrass 'Shenandoah'
Panicum virgatum
Zones 4a–9a · native to 49 states and provinces
Blooms Jul – Oct in zone 5b

Switchgrass 'Smoking Gun'
Panicum virgatum
Zones 4a–9a · native to 49 states and provinces
Blooms Jul – Oct in zone 5b

Tall Thimbleweed
Anemone virginiana
Zones 3a–8b · native to 46 states and provinces
Blooms Apr – Jul in zone 5b

Trillium
Trillium grandiflorum
Zones 3a–7b · native to 34 states and provinces
Blooms Apr – May in zone 5b

Two-leaf Miterwort
Mitella diphylla
Zones 3a–8b · native to 27 states and provinces
Blooms Apr – May in zone 5b

Vernal Witch Hazel
Hamamelis vernalis
Zones 4a–8b · native to 7 states
Blooms Jan – Feb in zone 5b

Virgin's Bower Clematis
Clematis virginiana
Zones 3a–9b · native to 40 states and provinces
Blooms Aug – Sep in zone 5b

Virginia Bluebells
Mertensia virginica
Zones 3a–8a · native to 29 states and provinces
Blooms Mar – May in zone 5b

Virginia Iris
Iris virginica
Zones 5a–9b · native to 23 states and provinces
Blooms May – Jul in zone 5b

Virginia Strawberry
Fragaria virginiana
Zones 3a–9a · native to 51 states and provinces
Blooms May – Jun in zone 5b

White Ash
Fraxinus americana
Zones 3a–9a · native to 37 states and provinces

White Snakeroot
Ageratina altissima
Zones 3a–8b · native to 30 states and provinces
Blooms Jul – Sep in zone 5b

White Wild Indigo
Baptisia alba var. macrophylla
Zones 4a–8b · native to 18 states
Blooms May – Jul in zone 5b

Wild Bergamot
Monarda fistulosa
Zones 3a–9b · native to 51 states and provinces
Blooms Jul – Sep in zone 5b

Wild Blue Indigo
Baptisia australis
Zones 3a–9b · native to 23 states
Blooms Apr – Jul in zone 5b

Wild Columbine
Aquilegia canadensis
Zones 3a–8b · native to 42 states and provinces
Blooms Jul – Oct in zone 5b

Wild Geranium
Geranium maculatum
Zones 3a–8b · native to 39 states and provinces
Blooms Apr – May in zone 5b

Wild Ginger
Asarum canadense
Zones 3a–7b · native to 40 states and provinces

Wild Leek
Allium tricoccum
Zones 3a–7b · native to 32 states and provinces
Blooms Jul – Jul in zone 5b

Wild Quinine
Parthenium integrifolium
Zones 4a–8a · native to 25 states
Blooms Jun – Aug in zone 5b

Wild Senna
Senna hebecarpa
Zones 3a–8b · native to 26 states and provinces
Blooms Jul – Aug in zone 5b

Wild Strawberry
Fragaria vesca
Zones 3b–9a · native to 50 states and provinces
Blooms Apr – Sep in zone 5b
Direct-sow ~10 wks after your last spring frost

Wood Lily
Lilium philadelphicum
Zones 3a–8b · native to 39 states and provinces
Blooms Jun – Jul in zone 5b

Woodland Phlox
Phlox divaricata
Zones 3b–9a · native to 38 states and provinces
Blooms May – Jun in zone 5b

Yarrow
Achillea millefolium
Zones 3a–9b · native to 50 states
Blooms Jun – Sep in zone 5b
Direct-sow ~8 wks after your last spring frost

Yellow Giant Hyssop
Agastache nepetoides
Zones 3a–8b · native to 29 states and provinces
Blooms Jul – Aug in zone 5b
Common questions
- What plants are native to Iowa?
- 'Golden Jubilee' Agastache, Agastache, Alum Root, American Bellflower, American Cranberrybush, American Elm, American Hornbeam, American Linden, and 235 more are native to Iowa. Every one links to its own growing page.
- When should I plant natives in Iowa?
- Timing depends on your hardiness zone. Each plant on this page shows its sowing and bloom window relative to your zone's last spring and first fall frost, so the dates stay correct wherever in Iowa you garden. As a rule, plant perennials and shrubs in early fall, at least six weeks before the first frost, or in spring once the soil drains.
- What hardiness zones does Iowa cover?
- Iowa runs from zone 4b to 6a. Pick your zone at the top of the page and the list re-sorts for it.
- Which keystone plants should I start with in Iowa?
- American Plum, Baldwin's Ironweed, Black Cherry, Black Oak, Black-Eyed Susan, Boxelder, among others. Keystone plants host the most caterpillar species in their ecoregion, which is what feeds nesting birds; one oak or native cherry does more than a bed of showy non-natives. Use the Keystones only toggle to see all 46.
How this list is built
Native ranges follow the USDA PLANTS Database; hardiness ranges follow USDA Plant Hardiness Zones; pollinator value draws on the Xerces Society. Where a reference almanac would stop at “confirm with your local authority,” we go one step further - every plant here links to its full growing page with frost-relative tasks for your zone.
Nature timing varies year to year. To calibrate to your own yard, the Garden Digest builds a weekly task list around your plants and frost dates.
The month ahead in your zone, free in your inbox.
What to sow, plant and watch for, timed to your frost dates. Once a month.
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