Quick answer: 145 native Illinois plants have a recorded bloom range that includes April.
145 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 beech Fagus grandifolia · 31 states
- American bladdernut Staphylea trifolia · 28 states
- American elm Ulmus americana · 31 states
- American hazelnut Corylus americana · 34 states
- American holly Ilex opaca · 28 states
- American hornbeam Carpinus caroliniana · 33 states
- American plum Prunus americana · 37 states
- American sycamore Platanus occidentalis · 28 states
- Bearberry Arctostaphylos uva-ursi · 34 states
- Bigtooth aspen Populus grandidentata · 20 states
- Birdfoot violet Viola pedata · 34 states
- Bitternut hickory Carya cordiformis · 28 states
- Black ash Fraxinus nigra · 19 states
- Black cherry Prunus serotina · 35 states
- Black oak Quercus velutina · 30 states
- Black tupelo Nyssa sylvatica · 31 states
- Black willow Salix nigra · 24 states
- Blackjack oak Quercus marilandica · 24 states
- Bloodroot Sanguinaria canadensis · 34 states
- Blue wild indigo Baptisia australis · 23 states
- Broadleaf cattail Typha latifolia · 39 states
- Buffalograss Bouteloua dactyloides · 19 states
- Bur oak Quercus macrocarpa · 33 states
- Butternut Juglans cinerea · 26 states
- Canada anemone Anemone canadensis · 29 states
- Canada wild rye Elymus canadensis · 37 states
- Canada yew Taxus canadensis · 18 states
- Canadian wild ginger Asarum canadense · 30 states
- Carolina allspice Calycanthus floridus · 17 states
- Chinkapin oak Quercus muehlenbergii · 30 states
- Chokecherry Prunus virginiana · 44 states
- Common blue violet Viola sororia · 37 states
- Common hackberry Celtis occidentalis · 33 states
- Common hoptree Ptelea trifoliata · 28 states
- Common juniper Juniperus communis · 39 states
- Common persimmon Diospyros virginiana · 26 states
- Common winterberry Ilex verticillata · 32 states
- Common yarrow Achillea millefolium · 47 states
- Coralberry Symphoricarpos orbiculatus · 30 states
- Creeping juniper Juniperus horizontalis · 12 states
- Creeping phlox Phlox subulata · 23 states
- Crossvine Bignonia capreolata · 16 states
- Downy serviceberry Amelanchier arborea · 37 states
- Dutchman's breeches Dicentra cucullaria · 32 states
- Dwarf crested iris Iris cristata · 17 states
- Dwarf larkspur Delphinium tricorne · 15 states
- Eastern bluestar Amsonia tabernaemontana · 18 states
- Eastern cottonwood Populus deltoides · 42 states
- Eastern hop-hornbeam Ostrya virginiana · 37 states
- Eastern leatherwood Dirca palustris · 25 states
- Eastern purple coneflower Echinacea purpurea · 24 states
- Eastern red cedar Juniperus virginiana · 37 states
- Eastern red columbine Aquilegia canadensis · 36 states
- Eastern redbud Cercis canadensis · 32 states
- Eastern white pine Pinus strobus · 28 states
- Farkleberry Vaccinium arboreum · 16 states
- Feathery false Solomon's seal Maianthemum racemosum · 45 states
- Fire pink Silene virginica · 26 states
- Flowering dogwood Cornus florida · 31 states
- Fragrant sumac Rhus aromatica · 30 states
- Golden alexanders Zizia aurea · 35 states
- Gray alder Alnus incana · 26 states
- Gray birch Betula populifolia · 17 states
- Green ash Fraxinus pennsylvanica · 43 states
- Indigo bush Amorpha fruticosa · 37 states
- Jack-in-the-pulpit Arisaema triphyllum · 35 states
- Jacob's ladder Polemonium reptans · 31 states
- Lanceleaf coreopsis Coreopsis lanceolata · 35 states
- Longbract wild indigo (cream false indigo) Baptisia bracteata var. leucophaea · 19 states
- Lyreleaf sage Salvia lyrata · 22 states
- Mapleleaf viburnum Viburnum acerifolium · 27 states
- Marsh marigold Caltha palustris · 28 states
- Mayapple Podophyllum peltatum · 35 states
- Maypop passionflower Passiflora incarnata · 21 states
- Mockernut hickory Carya tomentosa · 26 states
- Nannyberry Viburnum lentago · 25 states
- Narrowleaf blue-eyed grass Sisyrinchium angustifolium · 21 states
- New Jersey tea Ceanothus americanus · 35 states
- Northern red oak Quercus rubra · 33 states
- Northern spicebush Lindera benzoin · 31 states
- Northern white cedar Thuja occidentalis · 21 states
- Ohio buckeye Aesculus glabra · 20 states
- Old man's whiskers Geum triflorum · 9 states
- Pagoda dogwood Cornus alternifolia · 30 states
- Paper birch Betula papyrifera · 28 states
- Pawpaw Asimina triloba · 29 states
- Pignut hickory Carya glabra · 31 states
- Pin cherry Prunus pensylvanica · 20 states
- Pin oak Quercus palustris · 27 states
- Possumhaw Ilex decidua · 17 states
- Post oak Quercus stellata · 28 states
- Prairie Junegrass Koeleria macrantha · 29 states
- Purple meadow-rue Thalictrum dasycarpum · 17 states
- Quaking aspen Populus tremuloides · 39 states
- Red baneberry Actaea rubra · 29 states
- Red buckeye Aesculus pavia · 15 states
- Red maple Acer rubrum · 33 states
- Richardson's alumroot Heuchera richardsonii · 11 states
- Royal fern Osmunda regalis var. spectabilis · 30 states
- Rusty blackhaw viburnum Viburnum rufidulum · 18 states
- Scarlet oak Quercus coccinea · 28 states
- Shagbark hickory Carya ovata · 34 states
- Shingle oak Quercus imbricaria · 18 states
- Shumard oak Quercus shumardii · 22 states
- Silver maple Acer saccharinum · 37 states
- Slippery elm Ulmus rubra · 30 states
- Smooth Solomon's seal Polygonatum biflorum · 34 states
- Smooth alder Alnus serrulata · 23 states
- Sourwood Oxydendrum arboreum · 17 states
- Southern red oak Quercus falcata · 23 states
- Spotted beebalm Monarda punctata · 29 states
- Sugar maple Acer saccharum · 34 states
- Sundial lupine Lupinus perennis · 28 states
- Swamp white oak Quercus bicolor · 23 states
- Sweet crabapple Malus coronaria · 20 states
- Sweetgum Liquidambar styraciflua · 26 states
- Tamarack Larix laricina · 17 states
- Three-flower melic grass Melica nitens · 17 states
- Trailing arbutus Epigaea repens · 24 states
- Tulip tree Liriodendron tulipifera · 27 states
- Twinleaf Jeffersonia diphylla · 15 states
- Twoleaf miterwort Mitella diphylla · 25 states
- Virginia bluebells Mertensia virginica · 23 states
- Virginia pine Pinus virginiana · 20 states
- Virginia spiderwort Tradescantia virginiana · 24 states
- Virginia springbeauty Claytonia virginica · 28 states
- Virginia strawberry Fragaria virginiana · 30 states
- Virginia sweetspire Itea virginica · 19 states
- Water oak Quercus nigra · 17 states
- White ash Fraxinus americana · 35 states
- White baneberry Actaea pachypoda · 33 states
- White oak Quercus alba · 33 states
- White wild indigo Baptisia alba · 23 states
- Wild blue phlox Phlox divaricata · 36 states
- Wild geranium Geranium maculatum · 33 states
- Wild hyacinth (Atlantic camas) Camassia scilloides · 20 states
- Willow oak Quercus phellos · 23 states
- Winecup Callirhoe involucrata · 16 states
- Woodland pinkroot Spigelia marilandica · 16 states
- Yellow birch Betula alleghaniensis · 21 states
- Yellow buckeye Aesculus flava · 14 states
April in an Illinois native garden
April is one of Illinois's busiest bloom months, with 145 of the state's 289 native plants flowering (the peak is May).
61 start blooming in April, including Adam's needle, American basswood and American beech. 9 finish in April, including American elm, American sycamore and Black ash, so this is the last chance to see them in flower.
93 of them grow in full or partial sun and 102 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, 104 support pollinators, 93 provide food or cover for birds and 59 are caterpillar host plants.
116 of the 145 have a seed or plant listing we verified as the wild species. Be careful buying American alumroot, Common yarrow, Creeping phlox: 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
- Eastern cottonwood Populus deltoides · Sun, Part Shade, Shade · blooms Feb-Apr