Quick answer: 33 native South Dakota plants have a recorded bloom range that includes April.
33 species
- American basswood Tilia americana · 32 states
- American hazelnut Corylus americana · 16 states
- American plum Prunus americana · 25 states
- Bearberry Arctostaphylos uva-ursi · 16 states
- Black walnut Juglans nigra · 33 states
- Broadleaf cattail Typha latifolia · 11 states
- Bur oak Quercus macrocarpa · 24 states
- Canada anemone Anemone canadensis · 22 states
- Canada wild rye Elymus canadensis · 18 states
- Chokecherry Prunus virginiana · 35 states
- Common blue violet Viola sororia · 21 states
- Common hackberry Celtis occidentalis · 15 states
- Common juniper Juniperus communis · 18 states
- Creeping juniper Juniperus horizontalis · 10 states
- Downy serviceberry Amelanchier arborea · 34 states
- Eastern cottonwood Populus deltoides · 14 states
- Eastern hop-hornbeam Ostrya virginiana · 18 states
- Eastern red cedar Juniperus virginiana · 36 states
- Eastern red columbine Aquilegia canadensis · 36 states
- Green ash Fraxinus pennsylvanica · 23 states
- Indigo bush Amorpha fruticosa · 16 states
- Jack-in-the-pulpit Arisaema triphyllum · 14 states
- Nannyberry Viburnum lentago · 23 states
- Old man's whiskers Geum triflorum · 8 states
- Paper birch Betula papyrifera · 16 states
- Prairie Junegrass Koeleria macrantha · 15 states
- Purple meadow-rue Thalictrum dasycarpum · 7 states
- Quaking aspen Populus tremuloides · 24 states
- Red baneberry Actaea rubra · 22 states
- Silver buffaloberry Shepherdia argentea · 11 states
- Silver maple Acer saccharinum · 18 states
- Smooth Solomon's seal Polygonatum biflorum · 13 states
- Virginia strawberry Fragaria virginiana · 8 states