Quick answer: 159 native Illinois plants have a recorded bloom range that includes June.
159 species
- Adam's needle Yucca filamentosa · 21 states
- Allegheny serviceberry Amelanchier laevis · 17 states
- American alumroot Heuchera americana · 20 states
- American basswood Tilia americana · 37 states
- American bellflower Campanulastrum americanum · 34 states
- American bittersweet Celastrus scandens · 33 states
- American bladdernut Staphylea trifolia · 28 states
- American hazelnut Corylus americana · 34 states
- American holly Ilex opaca · 28 states
- American plum Prunus americana · 37 states
- American strawberry bush Euonymus americanus · 23 states
- Arctic brome (Kalm's brome) Bromus kalmii · 15 states
- Bearberry Arctostaphylos uva-ursi · 34 states
- Birdfoot violet Viola pedata · 34 states
- Black cherry Prunus serotina · 35 states
- Black huckleberry Gaylussacia baccata · 25 states
- Black tupelo Nyssa sylvatica · 31 states
- Black willow Salix nigra · 24 states
- Black-eyed Susan Rudbeckia hirta · 44 states
- Blue vervain Verbena hastata · 34 states
- Blue wild indigo Baptisia australis · 23 states
- Broadleaf cattail Typha latifolia · 39 states
- Brown-eyed Susan Rudbeckia triloba · 21 states
- Buffalograss Bouteloua dactyloides · 19 states
- Bunchberry Cornus canadensis · 18 states
- Butterflyweed Asclepias tuberosa · 40 states
- Canada anemone Anemone canadensis · 29 states
- Canada wild rye Elymus canadensis · 37 states
- Canadian burnet Sanguisorba canadensis · 20 states
- Canadian wild ginger Asarum canadense · 30 states
- Candle anemone (thimbleweed) Anemone cylindrica · 12 states
- Cardinal flower Lobelia cardinalis · 41 states
- Carolina allspice Calycanthus floridus · 17 states
- Chokecherry Prunus virginiana · 44 states
- Cinnamon fern Osmunda cinnamomea · 32 states
- Cockspur hawthorn Crataegus crus-galli · 25 states
- Common buttonbush Cephalanthus occidentalis · 29 states
- Common elderberry Sambucus nigra ssp. canadensis · 36 states
- Common hoptree Ptelea trifoliata · 28 states
- Common ninebark Physocarpus opulifolius · 30 states
- Common persimmon Diospyros virginiana · 26 states
- Common selfheal Prunella vulgaris · 25 states
- Common snowberry Symphoricarpos albus · 21 states
- Common winterberry Ilex verticillata · 32 states
- Common yarrow Achillea millefolium · 47 states
- Coralberry Symphoricarpos orbiculatus · 30 states
- Creeping phlox Phlox subulata · 23 states
- Cucumbertree Magnolia acuminata · 19 states
- Deerberry Vaccinium stamineum · 22 states
- Devil's walking stick Aralia spinosa · 21 states
- Downy hawthorn Crataegus mollis · 24 states
- Early azalea Rhododendron prinophyllum · 17 states
- Eastern gray beardtongue Penstemon canescens · 13 states
- Eastern leatherwood Dirca palustris · 25 states
- Eastern purple coneflower Echinacea purpurea · 24 states
- Eastern red columbine Aquilegia canadensis · 36 states
- Eastern teaberry Gaultheria procumbens · 23 states
- Farkleberry Vaccinium arboreum · 16 states
- Fewleaf sunflower Helianthus occidentalis · 16 states
- Fire pink Silene virginica · 26 states
- Fireweed Chamerion angustifolium · 37 states
- Flowering dogwood Cornus florida · 31 states
- Flowering spurge Euphorbia corollata · 29 states
- Foxglove beardtongue Penstemon digitalis · 35 states
- Fragrant sumac Rhus aromatica · 30 states
- Golden alexanders Zizia aurea · 35 states
- Gray dogwood Cornus racemosa · 19 states
- Grayhead coneflower Ratibida pinnata · 26 states
- Green ash Fraxinus pennsylvanica · 43 states
- Hairy beardtongue Penstemon hirsutus · 19 states
- Harebell Campanula rotundifolia · 35 states
- Heart-leaved meadow parsnip Zizia aptera · 30 states
- Highbush blueberry Vaccinium corymbosum · 25 states
- Highbush cranberry Viburnum opulus var. americanum · 22 states
- Indigo bush Amorpha fruticosa · 37 states
- Inland sea oats Chasmanthium latifolium · 21 states
- Jack-in-the-pulpit Arisaema triphyllum · 35 states
- Kentucky coffeetree Gymnocladus dioicus · 15 states
- King of the meadow Thalictrum pubescens · 21 states
- Lanceleaf coreopsis Coreopsis lanceolata · 35 states
- Large penstemon (shell-leaf beardtongue) Penstemon grandiflorus · 12 states
- Largeflower tickseed Coreopsis grandiflora · 25 states
- Leadplant Amorpha canescens · 16 states
- Little bluestem Schizachyrium scoparium · 42 states
- Longbract wild indigo (cream false indigo) Baptisia bracteata var. leucophaea · 19 states
- Low prickly pear Opuntia humifusa · 31 states
- Lowbush blueberry Vaccinium angustifolium · 22 states
- Lyreleaf sage Salvia lyrata · 22 states
- Mapleleaf viburnum Viburnum acerifolium · 27 states
- Maypop passionflower Passiflora incarnata · 21 states
- Mexican hat Ratibida columnifera · 17 states
- Nannyberry Viburnum lentago · 25 states
- Narrowleaf blue-eyed grass Sisyrinchium angustifolium · 21 states
- New Jersey tea Ceanothus americanus · 35 states
- Northern bush honeysuckle Diervilla lonicera · 18 states
- Orange coneflower Rudbeckia fulgida · 23 states
- Pagoda dogwood Cornus alternifolia · 30 states
- Pale purple coneflower Echinacea pallida · 17 states
- Partridge pea Chamaecrista fasciculata · 30 states
- Partridgeberry Mitchella repens · 31 states
- Pearly everlasting Anaphalis margaritacea · 38 states
- Pin cherry Prunus pensylvanica · 20 states
- Prairie Junegrass Koeleria macrantha · 29 states
- Prairie blue-eyed grass Sisyrinchium campestre · 11 states
- Prairie cordgrass Spartina pectinata · 25 states
- Prairie crabapple Malus ioensis · 15 states
- Prairie dropseed Sporobolus heterolepis · 19 states
- Purple meadow-rue Thalictrum dasycarpum · 17 states
- Purple milkweed Asclepias purpurascens · 20 states
- Purple prairie clover Dalea purpurea · 18 states
- Quaking aspen Populus tremuloides · 39 states
- Rattlesnake master Eryngium yuccifolium · 20 states
- Red baneberry Actaea rubra · 29 states
- Red-osier dogwood Cornus sericea · 36 states
- Richardson's alumroot Heuchera richardsonii · 11 states
- Riverbank grape Vitis riparia · 20 states
- Rocky Mountain bee plant Peritoma serrulata · 26 states
- Scaly blazing star Liatris squarrosa · 22 states
- Scarlet beebalm Monarda didyma · 25 states
- Sensitive fern Onoclea sensibilis · 26 states
- Shagbark hickory Carya ovata · 34 states
- Showy tick trefoil Desmodium canadense · 29 states
- Shrubby St. John's-wort Hypericum prolificum · 33 states
- Shrubby cinquefoil Dasiphora fruticosa ssp. floribunda · 23 states
- Sideoats grama Bouteloua curtipendula · 38 states
- Smooth Solomon's seal Polygonatum biflorum · 34 states
- Smooth hydrangea Hydrangea arborescens · 23 states
- Smooth oxeye Heliopsis helianthoides · 30 states
- Smooth rose Rosa blanda · 17 states
- Smooth sumac Rhus glabra · 42 states
- Sourwood Oxydendrum arboreum · 17 states
- Southern arrowwood Viburnum dentatum · 28 states
- Spotted beebalm Monarda punctata · 29 states
- Staghorn sumac Rhus typhina · 28 states
- Starry false Solomon's seal Maianthemum stellatum · 19 states
- Sundial lupine Lupinus perennis · 28 states
- Swamp milkweed Asclepias incarnata · 37 states
- Swamp rose Rosa palustris · 27 states
- Sweet crabapple Malus coronaria · 20 states
- Sweet-fern Comptonia peregrina · 21 states
- Trumpet vine Campsis radicans · 33 states
- Tulip tree Liriodendron tulipifera · 27 states
- Twoleaf miterwort Mitella diphylla · 25 states
- Virginia bluebells Mertensia virginica · 23 states
- Virginia chain fern Woodwardia virginica · 24 states
- Virginia creeper Parthenocissus quinquefolia · 40 states
- Virginia spiderwort Tradescantia virginiana · 24 states
- Virginia strawberry Fragaria virginiana · 30 states
- Virginia sweetspire Itea virginica · 19 states
- White baneberry Actaea pachypoda · 33 states
- White meadowsweet Spiraea alba · 22 states
- White wild indigo Baptisia alba · 23 states
- Whorled milkweed Asclepias verticillata · 30 states
- Wild geranium Geranium maculatum · 33 states
- Wild hyacinth (Atlantic camas) Camassia scilloides · 20 states
- Winecup Callirhoe involucrata · 16 states
- Witherod viburnum Viburnum nudum var. cassinoides · 24 states
- Yellow buckeye Aesculus flava · 14 states
- Yellow passionflower Passiflora lutea · 21 states
June in an Illinois native garden
June is one of Illinois's busiest bloom months, with 159 of the state's 289 native plants flowering (the peak is May).
41 start blooming in June, including American bellflower, Arctic brome (Kalm's brome) and Black-eyed Susan. 67 finish in June, including Allegheny serviceberry, American bittersweet and American bladdernut, so this is the last chance to see them in flower.
110 of them grow in full or partial sun and 97 tolerate shade, so there are options for open beds and woodland edges alike. Sizes run from low plants like American alumroot and Birdfoot violet to trees such as Allegheny serviceberry and American basswood. For wildlife, 130 support pollinators, 92 provide food or cover for birds and 60 are caterpillar host plants.
130 of the 159 have a seed or plant listing we verified as the wild species. Be careful buying American alumroot, Black-eyed Susan, Common yarrow: common listings for these are often a bred variety or a different species.
Good places to start
Verified wild-species listings that take sun and are widely native, so they are forgiving first plants.
- Chokecherry Prunus virginiana · Sun, Part Shade, Shade · blooms Apr-Jul
- Green ash Fraxinus pennsylvanica · Sun, Part Shade, Shade · blooms Apr-Jun
- Little bluestem Schizachyrium scoparium · Sun, Part Shade · blooms Jun-Dec