| April 7-14 |
 Mayapple/Mandrake Podophyllum peltatum |
 Wood Rush Lazula multiflora |
 Creeping Charlie/Ivy Glechoma hederacea |
 Speedwell/Veronica Veronica persica |
 Foamflower/Miterwort Tiarella cordifolia |
 Golden Alexander Zizia aurea |
 Catesby’s Trillium Trillium catesbaei |
 Coral Honeysuckle Lonicera sempervirens |
 Small-leaf Buttercup Ranunculus abortivus |
 Pussy-toes/Everlasting Antennaria solitaria |
 Corn-salad Vallerianella radiata |
 Bitter Cress Cardamine parviflora |
| April 15-30 |
 Star of Bethlehem Ornithogalum umbilatum |
 Yellow Wood Sorrel Oxalis stricta |
 Violet Wood Sorrel Oxalis violacia |
 Dwarf Dandelion Krigia virginca |
 Swamp Dewberry Rubus hispidus |
 Lyre-leafed sage Salvia lyrata |
 Goat's Rue Tephrosia virginiana |
 Fringe Tree Chionanthus virginicus |
 Blue-star Ansonia tabernaemontana |
 Wild Geranium Geranium maculatum |
 Atamasco Lily Zephyranthes atamasco |
 Henbit Lamium amplexicaule |
 Arrow-Wood Viburnum dentaum |
 Russian Olive Elaeagnus angustifolia |
 Mouse-ear Chickweed Cerastium Fontana |
 Spiny-leafed cow-thistle Sonchus asper |
 Fairywand Chamaelirium luteum |
 Five Fingers Potentilla canadensis |
 Blue Phlox Phlox divaricata |
 Buttercup Ranunculus bulbosus |
 Solomon's Seal Polygonatum biflorum |
 Houstonia Houstonia purpurea |
 Maple-leafed Viburnum Vibernum acerifolium |
 Coreopsis Coreopsis pubescens |
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 Multiflora Rose Rosa multiflora |
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| May 1-7 |
 Yellow Stargrass Hypoxis hirsutu |
 Deerberry/Gooseberry Vaccineum stamineum |
 Venus Looking Glass Triodanus perfoliata |
 Tulip Tree Liriodendron tuilipfera |
 Heart's-a-Bustin Euonymus americanus |
 Beard-tongue Penstemon laevigatus |
 Sundrops Oenothera fruticosa |
 Daisy Fleabane Erigeron annuus |
 Ox-eye Daisy Leucanthemum vulgare |
 Yellow Thistle Cirsium horridulum |
 Ditch Stonecrop Penthorum sedoides |
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| May 8-18 |
 Fire Pink Silene virginica |
 Wild Onion Allium canadense |
 Virginia Willow Itea virginica |
 Climbing Milkweed Matelea carolinensis |
 Flypoison Amianthium muscaetoxicum |
 Polygala Polygala curtissii |
 Japanese Honeysuckle Lonicera japonica |
 Spiderwort Tradescantia subaspera |
 Peppergrass Lepidium virginicum |
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 Yellow Sweet Clover Melilotus officinalis |
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| May 19-27 |
 Partridge Berry Mitchella repens |
 Horse Nettle Solanum carolinense |
 Skullcap Scutellaria ellipticus |
 Deptford Pink Dianthus armeria |
 Fringed Loosestrife Lysimachia ciliata |
 Wild Petunia Polygala curtissii |
 Red Clover Trifolium pratense |
 White Clover Trifolium rapens |
 Curly Dock Rumex crispex |
 Honeywort Cryptotaenia canadensis |
 White Milkweed Asclepias variegata |
 Elderberry Sambucus canadensis |
 Virginia Rose Rosa virginiana |
 Queen Anne's Lace Daucus carota |
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| May 27-June 9 |
 Black Cohosh Actaea racemosa |
 Butterfly Pea Clitoria mariana |
 Butterfly Weed Asclepias tuberosa |
 Dogbane Apocynum androaemifoleum |
 Eastern Bottlebrush Grass Elymus hystrix |
 Dyschoriste Dyschoriste obligifolia |
 Lizard's Tail Saururus cernuus |
 Passion Flower Elymus hystrix |
 Red Osier Dyschoriste obligifolia |
 Spiked Lobelia Lobelia spicata |
 Spotted Wintergreen/ Pipsissewa Chimaphila maculata |
 St. John's Wort Hypericum perforatum |
 Velvet Grass Holcus lanatus |
 White Sweet Clover Melilotus alba |
 Umbrella Grass Fuirena pumila |
| Most photos by Dave Otto. Spotted Wintergreen. Pipsissewa by Hannah Noah. |
| June 10-24 |
 Bull Thistle Cirsium vulgare |
 Beggar's Ticks Desmodium nudiflorum |
 Button Bush Cephalanthus occidentalis |
 Fingergrass Eustachys petraea |
 Fringed Sedge Carex crinita |
 Gamma Grass Tripsacum dactyloides |
 Goat's Beard Aruncus dioicus |
 Morning Glory Ipomoea purpurea |
 Narrow-leafed Mountain Mint Pycnanthemum tenuifolium |
 Nut-rush Schleria triglomerata |
 Pencil-flower Stylosanthes biflora |
 Thimbleweed Anemone virginiana |
 Trumpet Creeper Campsis radicans |
 Climbing Milk-pea Galactia volubilis |
 Water Hemlock Cicuta maculata |
 White Avens Geum canadense |
 Wild Garlic Allium vineale |
 Wild Ryegrass Elymus virginicus |
 Woodland Sunflower Helianthus strumosus |
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Most photos by Dave Otto. Beggar's Ticks & Narrow-leafed Mountain Mint by Hannah Noah |
| June 25-July 9 |
 Barnyard Grass Echinochloa crusgalli |
 Common Mullein Verbascum thapsus |
 Chinese Bush-clover Lespedeza cuneata |
 Downy False Foxglove Aureolaria virginica |
 Hoary Mountain Mint Pycnanthemum incanum |
 Indian Tobacco Lobelia inflata |
 Moth Mullein Verbascum blattaria |
 Pokeweed Phytolacca americana |
 Purple Beauty Berry Calicarpa dichotoma |
 Sourwood Oxydendrum arboreum |
 Spotted St. John's Wort Hypericum punctatum |
 Tall Verbena Verbena bonariensis |
 Tree-of-Heaven Ailanthus altissima |
 Virginia Buttonweed Diodia virginiana |
 Heal-all Prunella vulgaris |
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 Maryland Meadow Beauty Rhexia mariana |
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Most photos by Dave Otto. Moth Mullein & Downy False Foxglove by Hannah Noah |
| July 10 - July 23 |
 Compass Plant Silphium laciniatum |
 False Nettle Boehmeria cylindrica |
 Horseweed Conyza canadensis |
 Elephant's-foot Elephantopus tomentosus |
 Ironweed Veronia noveboracensis |
 Lady's Thumb Polygonum persicaria |
 Monkey Flower Mimulus ringens |
 Mouse Flower Commelina communis |
 Prairie Mimosa Desmanthus illinoensis |
 Rose-pink Sabatia angularis |
 Rough-stemmed Goldenrod Solidago rugosa |
 St. Andrew's Cross Hypericum hypericoides |
 Water-pepper Polygonum hydropiperoides |
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Most photos by Dave Otto. Elephant's-foot & Ironweed by Hannah Noah |
| July 24 - August 5 |
 Beggars-tick Desmodium canescens |
 Boneset Eupatorium perfoliatum |
 Ditch Stonecrop Penthorum sedoides |
 Galactia Galactia elliotti |
 Jewelweed Impatiens capensis |
 Jimsonweed Datura stramonium |
 Partridge Pea Chamaecrista fasciculata |
 Slender Bush Clover Lespedeza virginica |
 Spotted Joe-Pye Weed Eupatorium Maculatum |
 Sweet Everlasting Gnaphalium obtusifolium |
 Wild-bean Strophostyles umbellata |
 Winged Sumac Rhus copallina |
| Photos by Dave Otto |
| August 6 - August 22 |
 Cardinal Flower Lobelia cardinalis |
 Climbing Boneset Mikania scandens |
 Crown-beard/Wingstem Verbesina occidentalis |
 Nodding Onion Allium cernuum |
 Seedbox Ludwigia alternifolia |
 Shrubby Lespedeza Lespedeza bicolor |
 White Wood Aster Eurybia divaricata |
 Small-Flowered Agrimony Agrimonia parviflora |
 Yellow Nutsedge Cyperus esculentus |
| Photos by Dave Otto |
| August 22 - September 3 |
 Bushy Aster Aster dumosus |
 Common Ragweed Ambrosia artemisiifolia |
 Dwarf St. John's Wort Hypericum mutilum |
 Green-headed Coneflower Rudbeckia lacinata |
 Jumpseed Polygonum virginianum |
 Knotweed Bristlegrass Setaria parviflora |
 Prairie Golden Aster Heterotheca camporum |
 Redstar Ipomoea coccinea |
 Water Horehound Lycopus americanus |
 White Vervain Verbena urticifolia |
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| Most photos by Dave Otto. Prairie Golden Aster by Hannah Noah |