willow buds (sprout/green) 12 Mar 14 Mar 15 Mar 26 Mar 27 -1.0
(Salix alba vitellina)
Euro. hazelnut (FF/Pollen) 10 Mar 25 Mar 21 Mar 28 Mar 30 +1.0
(Corylus avellana)
skunk cabbage (pollen/PB) 11 Mar 22 Mar 25 Mar 27 Apr 2 -4.0
(Symplocarpus foetidus)
silver maple 13 Mar 23 Mar 26(Mar 27)Apr 6 -6.5
(Acer saccharinum)
Amer.hazelnut (FF/Pollen) 10 Mar 26 Mar 28 Mar 29 Apr 7 -5.5
(Corylus americana)
coltsfoot 19 Mar 27 Mar 28 Apr 21 Apr 16 +2.0
(Tussilago farfara)
snowdrop (garden) 16 Mar 20 Mar 31 Mar 29 Apr 12 -12.5
(Galanthus nivalis)
beaked hazel (FF/Pollen) 6 Mar 29 Mar 31 Apr 4 Apr 12 -5.0
(Corylus cornuta)
garden crocus (purple) 16 Mar 27 Apr 5 Apr 9 Apr 15 -7.5
(Crocus vernus)
American elm (FF/Pollen) 15 Apr 9 Apr 6 Apr 20 Apr 15 +4.0
(Ulmus americana)
Siberian elm (FF/Pollen) 9(Apr 13)Apr 10 ---- Apr 14 +3.0
(Ulmus pumila)
roundlobe hepatica (Glenh.)10 Apr 2 Apr 10 Apr 21 Apr 20 -3.5
(Anemone americana)
leatherwood 14 Apr 14 Apr 10 Apr 22 Apr 21 +2.5
(Dirca palustris)
common chickweed 16 Mar 26(Apr 10) ---- (May 15) -15.0
(Stellaria media)
tremblng aspen (pollen/PB) 9 Apr16E Apr 12 Apr 20 Apr 17 +3.5
(Populus tremuloides)
sharplobe hepatica 19 Apr 4 Apr 12 Apr 23 Apr 23 -4.0
(Anemone acutiloba)
slippery elm (FF/Pollen) 9 Apr 19 Apr 13 Apr 21 Apr 17 +5.0
(Ulmus rubra)
red maple 11 Mar 28 Apr 13 Apr 3 Apr 20 -16.5
(Acer rubrum)
blue squill 19 Apr3/4 Apr 13 Apr 22 Apr 24 -5.8
(Scilla siberica)
northern blue violet 16 Apr 15 Apr 15 Apr 26 Apr 23 +1.5
(Viola septentrionalis)
spicebush 10 Apr Apr 15 Apr 28 Apr 24 +5.2
(Lindera benzoin) 21/22
striped squill (garden) 16 Apr 12 Apr 15 Apr 23 Apr 25 -2.5
(Puschkinia spp)
Persian speedwell (Glenh.) 8 Apr 9 (Apr 15) ---- Apr 30E -6.0
(Veronica persica)
common groundsel 3 ---- (Apr 16) ---- ---- ----
(Senecio vulgaris)
white squill 18 Apr 10 Apr 16 Apr 23 Apr 24 -3.5
(Scilla siberica alba)
bloodroot 21 Apr3/4 Apr 17 Apr 23 Apr 24 -7.2
(Sanguinaria canadensis)
blue cohosh 12 Apr Apr 17(May1/2)Apr 28 +4.0
(Caulophylum thalictroides) 21/22
periwinkle 16 Mar 29 Apr 18 ---- May 5 -20.0
(Vinca minor)
heart-leaved willow 3 ---- (Apr 19)Apr 24(Apr 24) 0.0
(Salix eriocephala)
early buttercup (Mohawk) 8 Apr 20 Apr 19 May 3 Apr 27 +3.5
(Ranunculus fascicularis)
spring bluebell spp 15 Apr 20 Apr 19 Apr 24 Apr 27 -1.0
(Scilla spp(star-flowered))
spring beauty 15 Apr 18 Apr 19(May 5) May 3 +0.5
(Claytonia virginica)
pussy willow 16 Apr 21 Apr 20 Apr26E Apr 25 +1.0
(Salix dicolor)
Manitoba maple (FF/Pollen) 13 Apr Apr 20 Apr26E Apr 25 +1.8
(Acer negundo) 22/23
garden daffodil (in open) 13 Apr 18 Apr 20(May 1) Apr28 +0.5
(Narcissus pseudo-narcissus)
forsythia 17 Apr 21 Apr 20(May 3) May 1 +1.5
(Forsythia spp)
wild ginger 17 Apr 22 Apr 21 Apr 29 Apr 28 +1.0
(Asarum canadense)
purple cress 14 Apr 21 Apr 22 May 3 May 2 0.0
(Cardamine douglassii)
yellow trout lily 17 Apr 22 Apr 22 Apr 30 May 2 -1.0
(Erythronium americanum)
early saxifrage 8 Apr 27 Apr 22 ---- May 9 +5.0
(Saxifraga virginiensis)
shepherd's purse 10 Apr 26 Apr 23 ---- May 10 +3.0
(Capsella bursa-pastoris)
hairy wood rush 11 Apr 23 Apr 24(Apr 28)Apr 28 -0.5
(Luzula acuminata)
red trillium 18 Apr 26 Apr 24 May 2 Apr 30 +2.0
(Trillium erectum)
Penn. sedge (Pollen/PB) 9 Apr 29 Apr 24 May Apr 30 +3.2
(Carex pensylvanica) 1/2
Dutchman's breeches 19 Apr 23 Apr 24(May 4) May 4 -0.5
(Dicentra cucullaria)
Euro. corydalis (garden) 16 Apr 25 Apr 25 May 2 Apr 30 +1.0
(Corydalis bulbosa)
cutleaf toothwort 18 Apr 21 Apr 25 ---- May 5 -4.0
(Dentaria laciniata)
dandelion (in open) 25 Apr 26 Apr 25 May 7 May 8 0.0
(Taraxacum officinale)
weeping willow 13 Apr 27 Apr 26 May 2 May 4 -0.5
(Salix alba vitellina)
field strawberry 15 May 3 Apr 26 ---- May 14 +7.0
(Fragaria virginiana)
rue-anemone 16 Apr Apr 26 ---- May 15 +3.5
(Thalictrum thalictroides) 29/30
Canada plum (garden) 19 May 7 Apr 27 ---- May 3 +10.0
(Prunus nigra)
wood anemone 12 May 1 Apr 27 May May 7 +3.8
(Anemone quinquefolia) 10/11
Norway maple 12(Apr 29)Apr 27 May 8 May 7 +1.5
(Acer platanoides)
white trout lily 18 Apr 27 Apr 27 May 3 May 7 -2.0
(Erythronium albidum)
coltsfoot (seeds open) 18 May 3 Apr 27(May 9) May 7 +4.0
(Tussilago farfara)
field horsetail (Pollen/PB)15 Apr 24 Apr 28 Apr 30(Apr 29) -1.5
(Equisetum arvense)
white trillium 18 Apr 29 Apr 28 May 9 May 8 +1.0
(Trillium grandiflorum)
marsh-marigold 13 Apr Apr 28 May 9 May 8 +0.8
(Caltha palustris) 28/29
small alyssum (Glenh'st) 10 Apr 30 Apr 28 May 10 May 9 +1.5
(Alyssum alyssoides)
European ash (pollen) 5 ---- (Apr 29) ---- ---- ----
(Fraxinus excelsior)
sugar maple 11 Apr 27 Apr 29 ---- May 5 -2.0
(Acer saccharum)
lesser celandine 16 Apr 22 Apr 29(May 5) May 7 -4.5
(Ranunuculus ficaria)
fly honeysuckle 16 May 6 Apr 29 May 10 May 9 +4.0
(Lonicera canadensis)
pussytoes 7 ---- Apr 29 ---- (May 12) ----
(Antennaria neglecta)
henbit 12 Apr 29(Apr 29) ---- ---- 0.0
(Lamium amplexicaule)
dog violet 14 May Apr 30 ---- May 7 +3.5
(Viola conspersa) 3/4
large-flowered bellwort 18 Apr 24 Apr 30(May6/7)May 8 -3.8
(Uvularia grandiflora)
grape hyacinth (garden) 14 Apr 30 May 1 ---- (May 8) -1.0
(Muscari botryoides)
European red currant 11 May 5 May 1 May May 10 +2.8
(Ribes rubrum) 11/12
ground ivy 18 Apr May 1 ---- May 19 -4.5
(Gleuchoma hederacea) 26/27
twinleaf (garden) 16 Apr 29 May 2 May 3 May 6 -3.0
(Jeffersonia diphylla)
crack willow 10 ---- May 2 May 10 May 7 +3.0
(Salix fragilis)
serviceberry 14 May 3 May 2 ---- May 8 +1.0
(Amelanchier arborea)
common blue violet 18 Apr 29 May 2 ---- May 12 -3.0
(Viola papilionacea)
kidneyleaf buttercup 9 Apr 30 May 2 May 9 May 13 -3.0
(Ranunculus abortivus)
yellow violet 19 Apr 30 May 2 (May 15)May 15 -1.0
(Viola pubescens)
cypress spurge 10 May 5E May 2 (May 22)May 19 +3.0
(Euphorbia cyparissias)
smooth serviceberry 9 ---- May 3 ---- May 6 ----
(Amelanchier laevis)
Euro. white birch (Pollen) 11 ---- May 3 ---- May 6 ----
(Betula pendula)
sweet cherry spp 7 ---- May 3 May 8 (May 7) +1.0
(Prunus avium)
Red Haven peach (garden) 13 ---- May 3 ---- May 11 ----
(Prunus persica)
prickly gooseberry 12 Apr 30 May 3 May 9 May 11 -2.5
(Ribes cynosbati)
long-spurred violet 15 May 1 May 3 (May 10)May 14 -3.0
(Viola rostrata)
field pennycress 12 May 8 (May 4) ---- ---- +4.0
(Thlaspi arvense)
toad trillium (garden) 18 May 4 May 4 May 13 May 12 +0.5
(Trillium sessile)
red-berried elder 13 May 6 May 4 (May 12)May 15 -0.5
(Sambucus pubens)
wood poppy (garden) 18 Apr 30 May 4 May 10 May 15 -4.5
(Stylophotum diphyllum)
jack-in-the-pulpit 19 May 4 May 4 (May 15)May 17 -1.0
(Arisaema triphyllum)
wild pear 8 ---- May 5 (May12E)May 8 +4.0
(Pyrus communis)
early meadow rue 15 May 1 May 5 May May 8 -1.8
(Thalictrum dioicum) 9/10
garlic mustard 15 May 7 May 5 (May 17)May 20 -0.5
(Alliaria officinalis)
blue beech (pollen) 9 ---- May 6 ---- (May 8) ----
(Carpinus caroliniana)
hop hornbeam (pollen) 7 ---- May 6 ---- (May 9) ----
(Ostrya virginiana)
redbud (garden) 9 May May 6 May 15 May 15 +1.8
(Cercis canadensis) 9/10
red baneberry 16 May 8 May 6 May May 16 -1.8
(Actea rubra) 11/12
Virginia bluebells 19 May 8 May 6 May 16 May 17 +0.5
(Mertensia virginica)
honesty 15 May 2 May 6 May 14 May 17 -3.5
(Lunaria annua)
buffalo currant 15 May 4 May 7 May May 12 -2.2
(Ribes odoratum) 10/11
pin cherry 7 ---- May 7 ---- May 12 ----
(Prunus pensylvanica)
forget-me-not 20 May 4 May 7 May 15 May 20 -4.0
(Myosotis scorpioides)
yellow rocket 21 May 4 May 7 May 22 May 22 -1.5
(Barbarea vulgaris)
butternut (FF/pollen) 7 ---- May 8 May 11 May 0.0
(Juglans cinerea) 11-FP
bishop's cap (garden) 7 ---- May 8 (May20E)May 17 +3.0
(Mitella diphylla)
Canada violet (garden) 19 May 9 May 8 May 24 May 24 +0.5
(Viola canadensis)
toothwort 13(May 6) May 9 May 11 May 18 -5.0
(Dentaria diphylla)
star Solomon's seal 9 May May 9 ---- May 21 -6.5
(Smilacina stellata) 12/13
wild geranium 18 May 10 May 9 (May29E)May 24 +3.0
(Geranium maculatum)
black oak pollen (Glenh.) 6 ---- May 10 ---- ---- ----
(Quercus velutina)
wayfaring tree 8 ---- May 10 ---- May 16 ----
(Viburnum lanatana)
wild black currant 13 May 9 May 10(May 17)May 19 -1.5
(Ribes americanum)
dandelion (seeds open) 17 May 9 May 10 May15E May 22 -4.0
(Taraxacum officinale)
thyme-leaved speedwell 19 May 2 May 10(May 25)May 22 -2.5
(Veronica serpyllifolia)
goldenseal (garden) 17 May 9 May 11 May 24 May 17 +2.5
(Hydrastis canadensis)
foamflower (garden) 18 May May 11 May 23 May 23 -0.8
(Tiarella cordifolia) 9/10
corn speedwell 10 May 11 May 11 ---- ---- 0.0
(Veronica arvensis)
rose mandarin (garden) 13 ---- May 12(May20E)May 18 +2.0
(Streptopus roseus)
Japanese barberry 14 May 9 May 12 May 25 May 21 +0.5
(Berberis thunbergii)
common purple lilac 26 May 12 May 13 May 25 May 26 -1.0
(Syringa vulgaris)
white ash (pollen) 4 ---- (May 14) ---- ---- ----
(Fraxinus americana)
American plum 15 May May 14 May 14 May 19 -4.7
(Prunus americana) 9/10
caragana (garden) 13 ---- May 14 ---- May 20 ----
(Caragana arborescens)
greater celandine 19 May May 14 May22E May 21 -1.8
(Chelidonium majus) 9/10
white baneberry 14 ---- May 14 ---- May 24 ----
(Actaea pachypoda)
black medic 11 ---- May 14 ---- (June 5) ----
(Medicago lupulina)
early hawthorn spp 14 ---- May 15 ---- May 21 ----
(Crataegus spp.)
horse chestnut 9 ---- May 15 May 24 May 23 +1.0
(Aesculus hippocastanum)
Solomon's seal 14(May 15)May 15 ---- May 24 0.0
(Polygonatum pubescens)
bladdernut 9 May 13 May 15(May 24)May 24 -1.0
(Staphylea trifolia)
star or bastard toadflax 9 May 13 May 15 ---- May 29 -2.0
(Commandra umbellata)
red oak (pollen) 6 ---- May 16 ---- ---- ----
(Quercus rubra)
wild crab apple 10 May May 16 ---- May 21 -1.5
(Malus coronaria) 14/15
chokecherry 22 May May 16 ---- May 23 -2.5
(Prunus virginiana) 13/14
blue phlox (garden) 19 May 10 May 16 May 24 May 26 -4.0
(Phlox divaricata)
wild columbine 19 ---- May 16 ---- May 30 ----
(Aquilegia canadensis)
robin's plantain 7(May 24) ---- June June 2 +0.5
(Erigeron pulchellus) 2/3
garden chives 14(May 15)May 16 June2E June 7 -3.0
(Allium schoenoprasum)
dwf chinquapin (pollen) 9 ---- May 17 ---- ---- ----
(Quercus prinoides)
white mulberry 8 May 14(May 18) ---- (May 24) -4.0
(Morus alba)
tartarian honeysuckle 16 May 14 May 18(May 25)May 27 -3.0
(Lonicera tartarica)
lily-of-the-valley 19 May 14 May 18 May27E May 27 -2.0
(Convallaria majalis)
great Sol. seal (garden) 16 ---- May 19 ---- May 25 ----
(Polygonatum biflorum)
winged euonymus (Glenh.) 7 ---- May 19 ---- May 29 ----
(Euonymus alata)
running strawberry bush 6 ---- May 19 ---- June 7 ----
(Euonymus obvatus)
bur oak (pollen) 8 ---- May 20 ---- ---- ----
(Quercus macrocarpa)
starflower (garden) 12(May15E)May 20 ---- (May 28) -5.0
(Trientalis borealis)
blue-eyed grass 9(May22E)May 20 ---- May 29 +2.0
(Sisyrinchium montanum)
common buckthorn 13 ---- May 20 May May 29 -5.5
(Rhamnus cathartica) 23/24
wild lily-of-the-valley 11 ---- May 20 ---- May 29 ----
(Maianthemum canadense)
golden alexanders 16 May 13 May 20(June 1)May 31 -3.0
(Zizia aurea)
common barberry 9 ---- May 20 May 26 May 31 -4.0
(Berberis vulgaris)
bird's-foot trefoil 13 May 13 May 20 ---- June 9 -7.0
(Lotus corniculatus)
autumn olive 10 ---- May 21 May 26 May 27 -1.0
(Elaeagnus umbellata)
cleavers 9(May 25)May 21 ---- (May 28) +4.0
(Galium aparine)
red-osier dogwood 17 May 22 May 21 May 29 May 31 -0.5
(Cornus stolonifera)
glaucous honeysuckle 10 May 15 May 21 May 28 June 1 -5.0
(Lonicera dioca)
common cinquefoil 6 ---- (May 21) ---- (June 2) ----
(Potentilla simplex)
English hawthorn 8 ---- May 22 ---- May 29 ----
(Crataegus monogyna)
Scots pine (pollen) 18 ---- May 22 ---- ---- ----
(Pinus sylvestris)
mayapple 14 ---- May 22 May 28 May 30 -2.0
(Podophyllum peltatum)
white campion 8 ---- May 22 ---- June ----
(Silene pratensis) 11
rock sandwort (Glenhyrst) 9 ---- May 23(May 28)June 1 -4.0
(Arenaria stricta)
dame's rocket 26 ---- May 23 May 30 June 4 -5.0
(Hesperis matronalis)
common mallow 3 ---- (May 24) ---- ---- ----
(Malva neglecta)
black cherry 12 ---- May 24 May 26 May 29 -3.0
(Prunus serotina)
hound's-tongue 4(May25)(May 24) ---- June 4 +1.0
(Cynoglossum officinale)
purple vetch (Glenhyrst) 9 ---- May 24 ---- June 4 ----
(Vicia americana)
tall buttercup 17 May 24 May 24 June 5 June 9 -2.0
(Ranunculus acris)
tumble mustard 5 June 4 ---- ---- ---- ----
(Sisymbrium altissimum)
cockspur hawthorn 6 May 31 May 25 ---- (May 30) +6.0
(Crataegus crus-galli)
herb robert 17 ---- May 25(June5E)May 31 +5.0
(Geranium robertianum)
small yellow ladyslipper 12 ---- May 25(May 31)June 2 -2.0
(Cypripedium calceolus parv)
Virginia waterleaf 18 May 25 May 25(June 5)June 4 +0.5
(Hydrophyllum virginianum)
anemone (Glenhyrst) 10(May 24)May 24 June June 7 -2.2
(Anemone cylindrica) 2/3
false Solomon's seal 21 May May 26 May 29 June 1 -2.2
(Smilacina racemosa) 24/25
Bridlewreath spirea 16 May May 26 June 1 June 2 -2.2
(Spirea vanhouttei) 22/23
yellow wood sorrel 15 May May 26 ---- (June 4) +0.5
(Oxalis europa) 26/27
nannyberry 19 May 24 May 26 May 29 June 4 -4.0
(Viburnum lentago)
yellow goat's-beard 15 May 27 May 26 ---- June 4 +1.0
(Tragopogon pratensis)
charlock 21 May 28 May 26 ---- June 8 +2.0
(Sinapsis arvensis)
alternate dogwood 9 ---- May 27 May 31 June 4 -4.0
(Cornus alternifolia)
wild red raspberry 12 ---- May 27 ---- June 9 ----
(Rubus idaeus)
red clover 15 May 29 May 28 ---- June +1.0
(Trifolium pratense) 10
carrion flower 3 ---- (May 28) ---- (June 12) ----
(Smilax herbacea)
shagbark hickory (pollen) 4 ---- May 29 ---- ---- ----
(Carya ovata)
downy arrowwood 11 ---- May 29 ---- June 5 ----
(Viburnum rafinesquianum)
wild asparagus 8 ---- May 29 ---- ---- ----
(Asparagus officinalis)
white clover 11 ---- May 29 ---- June ----
(Trifolium repens) 11
common fleabane 25 May 25 May 29 ---- June -4.0
(Erigeron philadelphicus) 15
wormseed mustard 14 ---- May 29 ---- June ----
(Erysimum cheiranthoides) 15
tufted or cow vetch 14 ---- May 29 ---- June ----
(Vicia cracca) 19
black raspberry 9 May 25 May 30 ---- ---- -5.0
(Rubus occidentalis)
Canada anemone 13 May 30 May 30 ---- June 0.0
(Anemone canadensis) 13
ox-eye daisy 17(May 24)May 30 ---- June -6.0
(Leucanthemum vulgare) 19
black walnut (pollen) 8 ---- May 31 ---- ---- ----
(Juglans nigra)
slender vetch 5 ---- (May 31) ---- ---- ----
(Vicia tetrasperma)
yellow hawkweed 15 May 26 May 31 ---- June -5.0
(Hieracium caespitosum) 12
hairy beardtongue 18 May24E May 31 June 3 June -10.5
(Penstemon hirsutus) 17
common comfrey 16 ---- June 1 June 6(June 8) -2.0
(Symphytum officinale)
narrow-lvd hawk's-beard 7 ---- June 1 ---- ---- ----
(Crepis tectorum)
yellow sweet-clover 9 ---- June 1 ---- June ----
(Melilotus officinalis) 18
ground cherry (Glenhyrst) 8 June 4 June 2 ---- ---- +2.0
(Physalis heterophylla)
common blackberry 13 May 27 June 2 June 3 June -7.5
(Rubus allegheniensis) 12
orange horse gentian 4 ---- (June 3) ---- ---- ----
(Triosteum aurantiacum)
riverbank grape 17 May 30 June 3 June 5 June -5.0
(Vitis riparia) 11
common speedwell 6 ---- June 3 ---- June ----
(Veronica officinalis) 12
rugosa rose (garden) 15 May 24 June 4 ---- (Jun 18) -11.0
(Rosa rugosa)
alumroot (garden) 11 ---- June 4 ---- June ----
(Heuchera americana) 19
climbing nightshade 13(June 1)June 4 ---- June -3.0
(Solanum dulcamara) 20
climbing bittersweet 8 June 3 June 5 ---- (June 14) -2.0
(Celastrus scandens)
bladder campion 8 June 3 June 5 ---- June -2.0
(Silene cucubalus) 16
orange hawkweed 5 ---- June 5 ---- June ----
(Hieracium aurantiacum) 19
stinging nettle 8 ---- June 5(June6E) ---- ----
(Urtica dioica)
wild strawberry (fruit) 10 June 7 June 5 ---- June +2.0
(Fragaria virginiana) 25
black locust 17(May 29)June 6 June 2 June -9.0
(Robinia pseudo-acacia) 12
ninebark 11(June 1)June 6(June 6)June -7.0
(Physocarpus opulifolius) 15
poison ivy (Glenhyrst) 4 ---- (June 6) ---- (June 16) ----
(Rhus radicans)
crown vetch 8 June 2 June 6(Jun 21)June 25 -4.0
(Coronilla varia)
dwarf snapdragon 5 ---- (June 7) ---- ---- ----
(Chaenorrhinum minus)
northern bedstraw 6 ---- June 7 ---- June ----
(Galium boreale) 20
narrow-leaved vetch 11 ---- June 7 ---- June ----
(Vicia sativa) 22
yarrow 13 May 29 June 7 ---- June -9.0
(Achillea millefolium) 23
maple-leaved viburnum 3 ---- (June 8) ---- June ----
(Viburnum acerifolium) 11
smooth wild rose 16 May 30 June 8 ---- June -9.0
(Rosa blanda) 18
goutweed 17 June 3 June 8 June (Jun 23) -4.5
(Aegopodium podagraria) 19
wild madder 9 June 2 June 8(Jun 24)June -3.5
(Galium mollugo) 25
field bindweed 7 ---- June 8 ---- (Jun 29) ----
(Convolvulus arvensis)
false indigo (garden) 12 May June 9 June 6 June -8.7
(Amorpha fruticosa) 31/1 15
round-leaved dogwood 6 June 2 June 9 ---- June -7.0
(Cornus rugosa) 15
sweetbrier 5 ---- June 9 ---- (Jun 18) ----
(Rosa rubiginosa)
rough-fruited cinquefoil 14 June June 9 ---- June -3.5
(Potentilla recta) 5/6 20
spiked lobelia (Hardy Rd) 5 ---- ---- ---- (Jun 26) ----
(Lobelia spicata)
mossy stonecrop 12 ---- June June June 0.0
(Sedum acre) 10 22 22
wild mock-orange 10 June 7 June ---- June -3.0
(Philadelphus inodorous) 10 25
butter-and-eggs 10 ---- June ---- (Jun 28) ----
(Linaria vulgaris) 10
rough cinquefoil 11 ---- (Jun 11) ---- ---- ----
(Potentilla norvegia)
south'n arrowwood (garden) 6 ---- June ---- June ----
(Viburnum dentatum) 11 14
Indian hemp 7 ---- June ---- (July 1) ----
(Apocynum cannabinum) 11
tall meadow rue 11 ---- June ---- July 5 ----
(Thalictrum pubescens) 11
nodding thistle 19(Jun 8) June ---- ---- -3.0
(Carduus nutans) 12
common privet 7 ---- June June June -2.0
(Ligustrum vulgare) 12 19E 21
alfalfa 12 June 7 June ---- June -5.0
(Medicago sativa) 12 27
rough avens 11 June 7 June ---- (Jun 16) -6.0
(Geum laciniatum) 13
multiflora rose 11 June 7 June ---- June -6.0
(Rosa multiflora) 13 21
yellow goat's-beard (seed) 14 June 8 June ---- ---- -5.0
(Tragopogon pratensis) 13
sweet William 14 ---- June June (Jun 22) -2.0
(Dianthus barbatus) 14 20E
foxglove beardtongue 15 June 5 June ---- June -9.0
(Penstemon digitalis) 14 22
hedge bindweed 4 ---- (Jun 15) ---- ---- ----
(Convolvulus sepium)
yellow avens 10 ---- June (Jun 22)June -3.0
(Geum aleppicum) 15 25
purple-flowering raspberry 8 ---- June ---- (Jun 29) ----
(Rubus odoratus) 15
riverbank anemone 9 ---- (Jun 15) ---- June ----
(Anemone riparia) 29
yellow hawkweed (seeds) 4 ---- June ---- ---- ----
(Hieracium caesoitosum) 16
silky dogwood 5 ---- June ---- (Jun 24) ----
(Cornus obliqua) 17
wild 4-o'clock 6 June 3 June ---- ---- -14.0
(Mirabilis nyctaginea) 17
sow thistle spp 9 ---- June ---- ---- ----
(Sonchus spp) 18
grey dogwood 21 June 8 June ---- June -10.0
(Cornus racemosa) 18 25
staghorn sumac 7 ---- June June June -4.0
(Rhus typhina) 18 25 29
common St.John's-wort 11 ---- June ---- July 7 ----
(Hypericum perforatum) 18
chicory 11 ---- June ---- (July 8) ----
(Cichorium intybus) 18
white sweet-clover 9 ---- June ---- July ----
(Melilotus alba) 18 12
wild garlic 5 ---- June ---- June ----
(Allium canadense) 19 25
white avens 14 ---- June ---- June ----
(Geum canadense) 19 25
common sundrops (garden) 17 ---- June (Jun 22)June ----
(Oenothera fruticosa) 19 27
moneywort 15 June June ---- June +2.0
(Lysimachia nummularia) 21 19 28
Deptford pink 11 ---- June ---- July 6 ----
(Dianthus armeria) 19
common milkweed 14 ---- June ---- July ----
(Asclepias syrica) 19 10
heal-all 15(Jun 19)June ---- (July 10) 0.0
(Prunella vulgaris) 19
flowering spurge (Glenh.) 10 ---- (Jun 19) ---- Aug 5 ----
(Euphorbia corollata)
spreading dogbane 11 ---- June (Jun24E)July 3 -9.0
(Apocynum androsaemifolium) 20
burning bush (garden) 11 June June ---- July 4 0.0
(Euonymus atropurpureus) 21 21
butterfly weed (Hardy Rd) 9(Jun 19)June ---- July 5 -2.0
(Asclepias tuberosa) 21
wild parsnip 11 June June ---- July +2.0
(Pastinaca sativa) 23 21 14
false spirea 5 ---- (Jun 22) ---- ---- ----
(Sorbaria sorbifolia)
catalpa 18 ---- June ---- July 1 ----
(Catalpa speciosa) 22
common elderberry 11(Jun 18)June June July 1 -5.0
(Sambucus canadensis) 22 25
motherwort 15 ---- June ---- July 4 ----
(Leonurus cardiaca) 22
wild quinine (garden) 14 June 8 June ---- July -14.0
(Parthenium integrifolium) 22 13
queen-of-the-meadow (gdn) 10 ---- June ---- July 1 ----
(Filipendula ulmaria) 23
green milkweed (Glenhyrst) 6(Jun19)(Jun 23) ---- (July 5) -4.0
(Asclepias viridiflorus)
wild basil 18(Jun 19)June ---- (July 9) -4.0
(Satureja vulgaris) 23
Canada thistle 15(Jun 19)June ---- July -4.0
(Cirsium arvense) 23 11
smooth sumac 9(Jun 20)June ---- June -4.0
(Rhus glabra) 24 30
purple loosestrife 8 ---- (Jun 24) ---- (Jul 16) ----
(Lythrum salicaria)
mayweed 6 ---- June ---- July 8 ----
(Anthemis cotula) 25
Queen Anne's lace 17 June June ---- (Jul 29) -3.0
(Daucus carota) 11 25
Virginia creeper 5 ---- June ---- ---- ----
(Parthenocissus inserta) 26
orange day-lily 16 ---- June ---- July ----
(Hemerocallis fulva) 27 11
lady's thumb 6 ---- (Jun 28) ---- ---- ----
(Polygonum persicaria)
common mullein 16(Jun 20)June ---- July -8.0
(Verbascum thapsus) 28 14
black-eyed Susan 18 June June ---- July -6.0
(Rudbeckia hirta) 22 28 16
red raspberry (fruit) 15 ---- June ---- July ----
(Rubus idaeus) 28 16
agrimony 11 ---- June ---- (Jul 17) ----
(Agrimonia gryposepala) 28
fringed loosestrife 8 ---- June ---- July ----
(Lysimachia ciliata) 29 12
catnip 15 June June ---- July -6.0
(Nepeta cataria) 23 29 12
Dillen's tick-trefoil(Glen) 6 ---- June ---- (July 7) ----
(Desmodium dillenii) 30
Michigan lily 11 June June ---- July 8 -5.0
(Lilium michiganense) 25 30
enchanter's nightshade 17 ---- June ---- July 9 ----
(Circaea quadrisulcata) 30
spotted cowbane 6 ---- (Jun 30) ---- (Jul 15) ----
(Cicuta maculata)
Canada lily (garden) 6 ---- July 1 ---- ---- ----
(Lilium canadense)
creeping bellflower 16 ---- July 1 ---- July ----
(Campanula rapunculoides) 18
spotted jewelweed 3 ---- July 1(Sep5E) ---- ----
(Impatiens capensis)
hoary vervain (garden) 7 ---- July 2(Aug12E) ---- ----
(Verbena stricta)
white vervain 9 ---- July 2 ---- ---- ----
(Verbena urticifolia)
carpenter's square 3 ---- (July 3) ---- ---- ----
(Scrophularia marilandica)
black raspberry (fruit) 18 June July 3 ---- (Jul 21) -7.0
(Rubus occidentalis) 26
swamp milkweed 10 ---- July 4 ---- (Jul 12) ----
(Asclepias incarnata)
evening-primrose 14 ---- July 4 ---- ---- ----
(Oenothera parviflora)
oxeye (false sunflower) 9 ---- July 4 ---- July ----
(Heliopsis helianthoides) 30
pale jewelweed 7 ---- July 4 ---- (Aug 14) ----
(Impatiens pallida)
blue vervain 6 ---- July 5 ---- July ----
(Verbena hastata) 20
bouncing bet 7 ---- July 5 ---- July ----
(Saponaria officinalis) 20
American basswood 5 ---- July 6 ---- July 9 ----
(Tilia americana)
showy tick-trefoil (Glenh.)11 ---- (July 7) ---- ---- ----
(Desmodium canadense)
wild lettuce 6 June (July 7) ---- ---- -12.0
(Lactuca canadensis) 25
wild leek 7 ---- July 8 ---- July ----
(Allium tricoccum) 18
lopseed (Hardy Rd) 3 ---- (July 8) ---- (Jul 19) ----
(Phryma leptostachya)
Oswego tea (garden) 18 ---- July 8 ---- July ----
(Monarda didyma) 20
wild bergamot 15 ---- July 9 ---- July ----
(Monarda fistulosa) 18
wood sage or germander 4 ---- (July 9) ---- July ----
(Teucrium canadense) 22
Canada thistle (seeds) 3 ---- (July 9) ---- (Jul 27) ----
(Cirisium arvense)
hairy willow herb 6 ---- July 9 ---- (Jul 30) ----
(Epilobium hirsutum)
prickly lettuce 1 ---- (July 9) ---- ---- ----
(Lactuca scariola)
Virg. Mt. mint (garden) 14 ---- July Aug 4E Aug 3 +1.0
(Pycanthemum virginianum) 10
tansy 17 ---- July ---- (Aug 10) ----
(Tanacetum vulgare) 10
wild hydrangea (garden) 10 ---- July ---- (Jul 18) ----
(Hydrangea arborescens) 11
marshmallow (garden) 5 ---- (Jul 11) ---- (Jul 27) ----
(Althea officinalis)
elecampane 3 ---- July ---- ---- ----
(Inula helenium) 11
early goldenrod 10 ---- July ---- Aug 4 ----
(Solidago juncea) 11
European speedwell 5 ---- (Jul 12) ---- ---- ----
(Veronica spp)
queen-of-the-prairie (gdn) 10 ---- July ---- July ----
(Filipendula rubra) 12 21
northern willowherb 4 ---- (Jul 13) ---- ---- ----
(Epilobium glandulosum)
spikenard (garden) 9 ---- July ---- (Jul 21) ----
(Aralia racemosa) 13
tall cinquefoil (garden) 4 ---- (Jul 14) ---- ---- ----
(Potentilla arguta)
woodland sunflower (Glenh.) 8 ---- (Jul 14) ---- (Jul 28) ----
(Helianthus divaricatus)
virgin's bower 7 ---- July ---- Aug 14 ----
(Clematis virginiana) 14
side-oats gramma (prairie) 5 ---- July ---- (Jul 27) ----
(Bouteloua curtipendula) 15
downy willowherb 6 ---- July ---- (Jul 29) ----
(Epilobium strictum) 15
teasel 13 ---- July (Jul23E)Aug 6 -14.0
(Dipsacus fullonum) 15
sow thistle spp (seeds) 4 ---- (Jul 16) ---- ---- ----
(Sonchus spp)
helleborine orchid 7 ---- July ---- July ----
(Epipactis helleborine) 16 28
Culver's root (garden) 9 ---- July Aug July +5.5
(Veronicastrum virginicum) 17 5/6E 31
buttonbush (garden) 6 ---- July ---- (Jul 24) ----
(Cephalanthus occidentalis) 18
black cohosh (garden) 14 ---- July ---- (Aug 2) ----
(Cimicifuga racemosa) 18
gray-head coneflower gdn) 15 ---- July Aug 1E Aug 3 -2.0
(Ratibida pinnata) 18
spearmint (garden) 8 ---- July ---- (Aug 5) ----
(Mentha spicata) 18
large-leaved aster 15 Aug 2E July ---- Aug 14 +15.0
(Aster macrophyllus) 18
wild marjoram (Paris) 7 ---- ---- ---- (Aug 4) ----
(Origanum vulgare)
common burdock 16 ---- July ---- (Aug 8) ----
(Arctium minus) 19
lamb's quarters (pigweed) 4 ---- (Jul 20) ---- ---- ----
(Chenopodium alba)
Indian tobacco 4 ---- July ---- (Jul 31) ----
(Lobelia inflata) 20
big bluestem (prairie) 8 ---- July ---- Aug 7 ----
(Andropogon gerardii) 20
boneset 8 ---- July (Aug 12)Aug 13 -1.0
(Eupatorium perfoliatum) 20
bull thistle 10 ---- July ---- (Aug 13) ----
(Cirsium vulgare) 20
tall bellflower (garden) 4 July (Jul 22)Aug 4E ---- +2.0
(Campanula americana) 24
joe-pye weed 7 ---- July ---- Aug 13 ----
(Eupatorium maculatum) 23
prairie onion (garden) 7 ---- July ---- Aug 2 ----
(Allium stellatum) 24
cup-plant (garden) 11 Aug 7E July ---- Aug 18 +14.0
(Silphium perfoliatum) 24
great ragweed (pollen) 9 ---- July Aug 17(Aug 18) -1.0
(Ambrosia trifida) 26
wild cucumber 7 ---- July Aug Aug 17 -1.5
(Echinocystis lobata) 28 15/16
horseweed 6 ---- (Jul29)(Aug 10) ---- ----
(Erigeron canadensis)
wild senna (garden) 11 ---- July Aug 5E Aug 10 -5.0
(Cassia hebecarpa) 31
round bush clover (prairie) 6 ---- July ---- (Aug 15) ----
(Lespedeza capitata) 31
tiger lily (garden) 12 ---- Aug 1 ---- (Aug 7) ----
(Lilium tiginum)
prairie-dock (garden) 9 Aug 5E Aug 2 (Aug 24)Aug 24 +1.5
(Silphium terebinthinaceum)
thin-lf coneflower (garden) 8 ---- Aug 4 ---- Aug 26 ----
(Rudbeckia triloba)
grass-leaved goldenrod 14 ---- Aug 4 ---- Sept 4 ----
(Solidago graminifolia)
great blue lobelia 11 Aug 4E Aug 6 (Aug20 Aug 24 -3.0
(Lobelia siphilitica) /21)
white snakeroot 8 Aug 3E(Aug 7) ---- (Aug 28) -4.0
(Eupatorium rugosum)
Prince's feather (garden) 5 ---- (Aug 8) ---- Aug 24 ----
(Polygonum orientale)
rigid goldenrod (garden) 10 Aug 7 Aug 8 (Aug 30)Aug 30 -0.5
(Solidago rigida)
green-headed coneflower 0 Aug 5E(Aug 9) ---- (Aug 15) -4.0
(Rudbeckia laciniata)
little bluestem (prairie) 6 ---- Aug 10 ---- ---- ----
(Andropogon scoparius)
smooth aster (Paris trail) 8 Aug 4E Aug 10 ---- (Sep 10) -6.0
(Aster laevis)
southern ironweed (garden) 12 ---- Aug 11 ---- Aug 17 ----
(Veronia crinita)
mayapple (fruit ripe) 4 Aug 4E(Aug 11) ---- ---- -7.0
(Podophyllum peltatum)
largeflower gaura (garden) 7 ---- Aug 11 ---- Aug 29 ----
(Gaura longiflora)
zig-zag goldenrod 11 Aug 13 Aug 11(Sept 1)Sept 9 -3.0
(Solidago flexicaulis)
common ragweed (pollen) 9 ---- Aug 12 ---- ---- ----
(Ambrosia artemisiifolia)
tall sunflower (Hardy Rd) 7 ---- Aug 12 ---- (Sept 6) ----
(Helianthus giganteus)
Canada goldenrod 17 ---- Aug 12 ---- Sept ----
(Solidago canadensis) 12
wild grape (fruit ripe) 3(Aug10)(Aug 12) ---- ---- -2.0
(Vitis riparia)
tall coreopsis (garden) 8 ---- Aug 13 ---- Aug 31 ----
(Coreopsis tripteris)
switch grass (garden) 8 Aug 9E Aug 14 ---- ---- -5.0
(Panicum virgatum)
groundnut (Grand River) 4 Aug 23(Aug 15) ---- ---- +8.0
(Apios americana)
false dragonhead (garden) 13 ---- Aug 15 ---- ---- ----
(Physostegia virginiana)
flat-topped aster 6(Aug11)(Aug16)(Sept3)(Sept 5) -3.5
(Aster umbellatus)
blue-stem goldenrod 9 Aug 16 Aug 17(Sep 2)(Sept 6) -2.5
(Solidago caesia)
gray goldenrod 12 Aug 15 Aug 17(Sept 4)Sept 9 -3.5
(Solidago nemoralis)
arrow-leaved aster 10 Aug 14 Aug 17(Sept 3)Sept 14 -7.0
(Aster sagittifolius)
New England aster 14 Aug 14 Aug 17(Sep 25)Sept 19 +1.5
(Aster novae-angliae)
turtlehead (Paris) 7 Aug Aug 18(Aug23)(Aug 28) -5.5
(Chelone glabra) 12E
nodding ladies'-tresses 5 Aug 15(Aug18)(Sept 1)Sept 1 -1.5
(Spiranthes cernua)
grass-of-Parnassus (Paris) 6 Aug 8 (Aug 18)Sept (Sept 3) -4.5
(Parnassia glauca) 4E
Indian grass (Paris) 8(Aug 14)Aug 19(Aug28)(Sept 1) -4.5
(Sorgastrum nutans)
white lettuce 7 Aug 9 Aug 19(Aug25)(Sept 3) -9.5
(Prenanthes alba)
calico aster 10(Aug 16)Aug 19(Sep 17)Sept 13 +0.5
(Aster lateriflorus)
swamp aster (Paris trail) 7(Aug 15)Aug 19(Sep 17)Sept 15 -1.0
(Aster puniceus)
small panicled aster 12 Aug 19 Aug 20 ---- ---- -1.0
(early aster lanceolatus spp)
thin-leaved sunflower 4(Aug13)(Aug 21) ---- ---- -8.0
(Helianthus decapetalus)
frost aster 10 Aug 20 Aug 21(Sep25)(Sep 20) +2.0
(Aster pilosus)
nodding bur-marigold 4 ---- (Aug 22) ---- (Sep 13) ----
(Bidens cernua)
beggar ticks 10(Aug 25)Aug 23 ---- (Sep 11) +2.0
(Bidens frondosa)
sky-blue aster (prairie) 8 Aug 21 Aug 23(Sep20)(Sep 20) -1.0
(Aster oolentangiensis)
rough-lvd goldenrod (Paris) 6(Aug 6) Aug 24 ---- (Sept 5) -18.0
(Solidago patula)
heart-leaved aster 5 ---- (Aug 24) ---- Sept ----
(Aster cordifolius) 17
large-leaved aster (seeds) 5 ---- (Aug 27) ---- ---- ----
(Aster macrophyllus)
red turtlehead (garden) 5 ---- Aug 27(Sep17)(Sep 9) +8.0
(Chelone obliqua)
strawberry bush (fruit) 4(Aug23)(Aug 28) ---- ---- -5.0
(Euonymus obvatus)
lance-leaved aster 9 ---- (Aug29)(Sep 27)Sept +7.0
(Aster lanceolatus) 20
fringed gentian (Hardy Rd) 6 Sept Sept 5 (Sept Sept -0.5
(Gentiana crinita) 4/5 30) 13
heath aster 8 Sept 6 Sept 6 ---- (Sep 25) 0.0
(Aster ericoides)
beechdrops 7 Sept 6 Sept ---- (Sep 21) -5.0
(Epifagus virginiana) 11
max. sunflower (garden) 10 ---- Sept (Sep 30)Sept +5.0
(Helianthus maximilianii) 13 25
witch-hazel 5 ---- (Sep 22) ---- ---- ----
(Hamamelis virginiana)
zig-zag goldenrod (seeds) 5 Sept (Sep 27) ---- ---- -10.0
(Solidago flexicaulis) 17
SOME ADDITIONAL OBSERVATIONS:
Spring Peepers Calling 18 Mar 27 Apr 8 ---- ---- -12.0
Mourning Cloak Butterfly 28 Mar 26 Apr 10 ---- ---- -15.0
Wood Frogs Calling 10 Mar 28 Apr 10 ---- ---- -13.0
Garter Snake Sunning 9 Apr 19 Apr 11 ---- ---- +8.0
American toad calling 20 Apr 30 Apr 20 ---- ---- +10.0
Tent Caterpillar EggsHatch 12(Apr 22)Apr 22 ---- ---- 0.0
Bumblebee flying 14 Apr 22 Apr 24 ---- ---- -2.0
Cabbage White Butterfly 16 May 04 Apr 24 ---- May 1 +10.0
PROGRESS OF SEASONAL BLOOM COMPARED TO THE AVERAGE: (DAYS)
Mar 14-22 -5.0
Mar 23-31 -7.0
Apr 1-5 -10.7 May 1-5 +0.5 May31-June4 -4.5
Apr 5-10 -3.8 May 6-10 +0.1 June 5-9 -5.2
Apr 11-15 +1.0 May 11-15 -2.5 June 10-14 N/A
Apr 16-20 +2.1 May 16-20 -2.0E June 15-19 -3.8
Apr 21-25 -0.2 May 21-25 -1.2 June 20-24 -2.8
Apr 26-30 +0.3 May 26-30 -3.0 June 25-29 -6.8E
Jun30-Jul4 N/A July30-Aug3 N/A Aug29-Sep2 -3.0
July 5-9 N/A Aug 4-8 -1.8E Sept 3-7 -3.9
July 10-14 N/A Aug 9-13 -4.4 Sept 8-12 N/A
July 15-19 N/A Aug 14-18 -2.7 Sept 13-17 -1.5E
July 20-24 N/A Aug 19-23 -1.4 Sept 18-22 N/A
July 25-29 N/A Aug 24-28 -2.3 Sept 23-27 N/A
NOTE:FF = First Flowers/Pollen;PB = Peak/Mid Bloom;E = Estimate
Ron Hepworth (hepwortr@ican.net)