Selected Trees, Shrubs, and Herbaceous Plants
That Start Blooming by May 15th on the Average

Arranged by Average Date of First Blooming from Earliest to Latest

before march march april 1-15 april 16-30 may 1-15

Before March 1st
  1. common chickweed (Stellaria media)
  2. dandelion (Taraxacum officinale)
  3. skunk-cabbage (Symplocarpos foetidus)
  4. bitter-cress (Cardamine hirsuta)
  5. henbit (Lamium amplexicaule)
  6. field speedwell (Veronica agrestis)


March
  7. coltsfoot (Tussilago farfara)
  8. spring-beauty (Claytonia virginica)
  9. harbinger-of-spring (Erigenia bulbosa)
10. hepatica (Hepatica americana)
11. moss-pink (Phlox subulata)
12. dead-nettle (Lamium purpureum)
13. Indian-strawberry (Duchesnea indica)
14. cut-leaved toothwort (Dentaria laciniata)
15. bloodroot (Sanguinaria canadensis)
16. spicebush (Lindera benzoin)
17. shepherd's-purse (Capsella bursa-pastoris)
18. ground-ivy (Glechoma hederacea)
19. early saxifrage (Saxifraga virginiensis)
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1-15 April
20. yellow trout-lily (Erythronium americanum)
21. Virginia bluebells (Mertensia virginica)
22. Dutchman's-breeches (Dicentra cucullaria)
23. smooth rock-cress (Arabis laevigata)
24. common blue violet (Viola sororia)
25. bluets (Houstonia caerulea)
26. trailing-arbutus (Epigaea repens)
27. shadbush (Amelanchier arborea)
28. twinleaf (Jeffersonia diphylla)
29. crowfoot (buttercup) (Ranunculus abortivus)
30. rue-anemone (Anemonella thalictroides)
31.
star chickweed (Stellaria pubera)
32. yellow fumewort (Corydalis flavula)
33. toadshade (Trillium sessile)
34. white clover (Trifolium repens)
35. blue phlox (Phlox divaricata)
36. golden ragwort (Senecio aureus)
37. redbud (Cercis canadensis)
38. squirrel-corn (Dicentra canadensis)
39. smooth yellow violet (Viola pubescens)
40. creeping yellow wood-sorrel (Oxalis corniculata)
41. marsh buttercup (Ranunculus septentrionalis)
42. wild ginger (Asarum canadense)
43. winter-cress (Barbarea vulgaris)
44. garlic-mustard (Alliaria petiolata)
45. golden-alexanders (Zizia aurea)
46. common mustard (Brassica campestris)
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16-30 April
47. plantain-leaved pussytoes (Antennaria plantaginifolia)
48. wild strawberry (Fragaria virginiana)
49. running cinquefoil (Potentilla canadensis)
50. false mermaid (Floerkea proserpinacoides)
51. nodding star-of-Bethlehem (Ornithogalum nutans)
52. creamy violet (Viola striata)
53. sessile-leaved bellwort (Uvularia sessifolia)
54. blue-cohosh (Caulophyllum thalictroides)
55. catchfly (Silene caroliniana)
56. spreading chervil (Chaerophyllum procumbens)
57. wood anemone (Anemone quinquefolia)
58. dwarf ginseng (Panax trifolius)
59. pennywort (Obolaria virginica)
60. wild columbine (Aquilegia canadensis)
61. flowering dogwood (Cornus florida)
62. wild geranium (Geranium maculatum)
63. jack-in-the-pulpit (Arisaema triphyllum)
64. peppergrass (Lepidium virginicum)
65. hairy sweet-cicely (Osmorhiza claytonii)
66. black-haw (Viburnum prunifolium)
67. mouse-eared chickweed (Cerastium arvense)
68. pawpaw (Asimina triloba)
69. wild sarsaparilla (Aralia nudicaulis)
70. mayapple (Podophyllum peltatum)
71. early meadow-rue (Thalictrum dioicum)
72. Morrow honeysuckle (Lonicera morrowii)
73. pink lady's-slipper (Cypripedium acaule)
74. bedstraw (cleavers) (Galium aparine)
75. pink azalea (Rhododendron periclymenoides)
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1-15 May
76. golden-club (Orontium aquaticum)
77. perfoliate bellwort (Uvularia perfoliata)
78. empress-tree (Paulownia tomentosa)
79. showy orchis (Galearis spectabilis)
80. three-leaved stonecrop (Sedum ternatum)
81. pale vetch (Vicia caroliniana)
82. green-and-gold (Chrysogonum virginianum)
83. wild black cherry (Prunus serotina)
84. phacelia (Phacelia dubia)
85. squaw-root (Conopholis americana)
86. robin's-plantain (Erigeron pulchellus)
87. bastard-toadflax (Comandra umbellata)
88. common blackberry (Rubus allegheniensis)
89. black locust (Robinia pseudoacacia)
90. one-flowered cancer-root (Orobanche uniflora)
91. tulip-poplar (Liriodendron tulipifera)
92. false Solomon's-seal (Smilicina racemosa)
93. Virginia waterleaf (Hydrophyllum virginianum)
94. fringe-tree (Chionanthus virginicus)
95. Solomon's-seal (Polygonatum biflorum)
96. lyre-leaved sage (Salvia lyrata)
97. yellow stargrass (Hypoxis hirsuta)
98. blue-eyed-grass (Sisyrinchium species)
99. yellow sweet-clover (Melilotus officinalis)
100.wood-betony (Pedicularis canadensis)
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