||A few Trillium grandiflorum (large white trillium) in flower, UWGB.
New in Flower, UWGB: Prunus nigra (Canadian plum), Ribes cynosbati (eastern prickly gooseberry), Ribes odoratum (golden currant, planted). The forest seems quite dry for this time of year.
Acer platanoides (Norway maple) and Malus sp. ( flowering crabs)) are conspicuously in flower in the City of Green Bay.
Amelanchier arborea (June-berry)
in flower in courtyard, UWGB.
New in flower in UWGB's Cofrin Arboretum: Viola pubescens
(common blue violet), Ribes rubrum (red
currant), Erythronium americanum (yellow trout
lily), and a single open flower of Viola pubescens (yellow
This is the first day for the strong characteristic aroma
of the opening buds of Populus balsamifera (balsam poplar)
in the air of the Cofrin Arboretum (flowering started about April
||Viola labradorica (dog violet) and
Fraxinus pennsylvanica (green
ash) in flower, UWGB.
West Virginia White butterfly observed, Oconto County, Pensaukee
Cabbage Butterfly, UWGB.
Poa annua (annual bluegrass) in flower, UWGB. This
species has probably been in flower on some drier, sunny disturbed
sites earlier, but this is the first day I have seen it on UWGB.
||Acer saccharum (sugar
maple) in flower (anthesis) Brown County, UWGB.
First day of flowering for: Anemone quinquefolia (wood
anemone), Cardamine diphylla (broad-leaved toothwort),
Lamium amplexicaule (henbit), Veronica serpyllifolia
Arisaema triphyllum (Jack-in-the-pulpit) has fully
formed spathes and many people would say they are flowering, although
no pollen has been released yet.
Erythronium americanum (yellow trout lily) in flower,
Baird Creek Park, City of Green Bay (Kathy Groves).
Gray Tree Frogs calling, Oconto County, Pensaukee (Tom Erdman)
Ribes triste (swamp
red currant), Ranunculus hispidus (swamp buttercup),
Anemone quinquefolia (wood anemone) in flower, City
of Green Bay. Populus tremuloides (quaking aspen)
is starting to leaf out conspicuously as the young fruits develop.
First day for Spring Azure butterflies, UWGB's Cofrin Arboretum.
First day for yellow warblers, Brown County (Bob Howe).
First Painted Turtle, crossing the road, UWGB.
Plants first day in flower, UWGB: Cardamine douglassii (purple
spring-cress), Cardamine concatenata (cut-leaved toothwort,
previously known as Dentaria laciniata), .
Acer platanoides (Norway
maple), Betula papyrifera (paper
birch), Barbarea vulgaris (yellow rocket),
Salix bebbiana (Bebb's
willow), Euphorbia cyparissias (cypress spurge)
in flower, City of Green Bay.
||Erythronium albidum (white
trout lily) in flower, City of Green Bay (Amy Wolf). [first
day flower uwgb April 20, gf]
Glechoma hederacea (gill-over-the-ground) in flower,
Oryzopsis asperifolia (rough-leaved rice grass) in
flower (anthesis) Oconto County (Juniper Sundance)
||New in flower, UWGB: Carex pedunculata
(long-stalk sedge), Salix petiolaris (meadow
willow), Salix eriocephala (diamond
Today was the 6th consecutive day of high temperatures in the mid-60's
or higher--well above the average high temperatures (low 50's) for
this time of year.
Several woody species that produce large volumes of pollen (and
therefore some allergic reactions) began to flower today: Acer
Populus deltoides (cottonwood),
Juniperus chinensis (Chinese juniper, but many cultivars
and many common names, including the popular "Pfitzer juniper").
If you had a "spring cold" this weekend, you may want
to consider the possibility that you have an allergy to one or more
of these species. They are all very common and numerous in Green
Bay and they are releasing clouds of pollen.
Other species beginning to flower: Carex pensylvanica (Pennsylvania
sedge), Sanguinaria canadensis (bloodroot--a few
reports as earlyb as 04/12), Caltha palustris (marsh marigold),
Elsewhere in Brown County: Shepherdia canadensis (buffalo-berry),
Draba verna (spring whitlow-grass) and Erysimum
cheiranthoides (worm-seed mustard this one only in cracks
in concrete in City GB).
We had several consecutive warm days, and then a little rain yesterday
in Green Bay. Today's unseasonably warm temperature (77° F at
4 pm) has promoted a rash of new species in flower on the UWGB campus:
Salix humilis (prairie
willow), Thlaspi arvense (field pennycress),
Veronica perigrina (purslane speedwell) Veronica
arvensis (corn speedwell) and Senecio vulgaris
Abrupt greening of lawns in Green bay area.
Amidst the Yellow-rumped Warblers, Golden-crowned Kinglets,
Hermit Thrushes, Song Sparrows, Yellow-bellied
Spasuckers, and Brown Creepers at Pt. Sauble, we encountered
two new species today for the UW-Green Bay Ornithology class. Two
highly vocal Brown Thrashers (first of the year for us) showed
themselves plainly to the group during the morning field trip. We
also heard a Swamp Sparrow for the first time. Rain tonight
probably means a new wave of migrants will be on its way soon (Bob
Acer rubrum (red
maple) in flower (anthesis), UWGB. Some planted Populus
deltoides (cottonwood) along East Mason Stree are in
anthesis today, but not the native plants in natural habitats.
Ulmus americana (American
elm), Ulmus pumila (Siberian
elm), Thuja occidentalis (white
cedar) in flower (anthesis), UW-Green Bay campus. Also Capsella
bursa-pastoris (shepherd's-purse) in flower.
in flower, City of Green Bay (photograph, to illustrate the species,
is from April 30, 2000).
This is the first day that Equisteum arvense (field
horsetail) released spores. Also the first day of flower
(anthesis) of the earliest Ulmus pumila (Siberian
elm) and Populus grandidentata (big-tooth
aspen) and the first Taraxacum officinale (dandelions)
flowering in sunny south facing slopes adjacent to buildings, UWGB.
This is the first day for suckers (fish) spawning in Mahon
Creek, UWGB. Water is so low in the creek that they are finding
it difficult to get up the stream.
The forecast for Green Bay today predicts high temperature of
about 70 F. We have not experienced a temperature that high
since last October. [actual high was 72 F, gf]
Leopard frogs and Toads out (but not yet calling)
Oconto County (Tom Erdman).
Our local tree swallows have returned, Town of Cooperstown,
Manitowoc County (Joel Trick).
First open flowers on Hepatica acutiloba (sharp-lobed
hepatica), Town of Cooperstown, Manitowoc County (Joel Trick).
[this plant was long known as Hepatica acutiloba and will
appear under that name in many books, but Anemone acutiloba
is the currently accepted name, gf]
Red Admiral and Mourning Cloak butterflies and Honey
Bees out, Oconto County, Pensaukee (Tom Erdman).
Belted Kingfisher and Northern Flicker have returned
in Shawano (Joel Whitehouse).
On 8 April I saw the first phorid flies mating on my compost
pile. I hadn't seen any active arthropods on the compost before
then, City of Green Bay (Mike Draney).
Big Brown Bats (Eptesius fuscus) are back, Marinette
County, Town of Porterfield (Jay Watson).
||The weather has turned cold, windy and overcast
in the Green Bay area. Rain and even a little snow is predicted for
Wisconsin today, but warmer weather is expected to return quickly.
||The earliest plants of Salix
discolor (pussy willow) are in flower (anthesis of
male flowers) on UWGB, although the plant that I monitor on a regular
basis has not yet begun to flower.
Yesterdays fire on the west shore of Green Bay was part of a large
plan to control the invasive plant Phragmites
australis (giant reed). Phragmites has invaded
thousands of acres of wetland since 1999, including most of the
coastal marshes on Green Bay. It produces dense, nearly pure stands
of tall stems that exclude all other wetland plants from the site.
For the control effort to have a chance of success, there must be
careful followup to kill any surviving plants or they will simply
spread back into the cleared areas. Photos and information about
Phragmites are provided in the link above.
A few wood frogs calling, UWGB Bayshore Pond (Jenna King).
Wood frogs also calling in Keshena (Joel Whitehouse.
This morning we had our first eastern phoebe calling in
the yard; in the afternoon, small numbers of wood frogs and
spring peepers were calling, and wild leek (Allium
tricoccum) has emerged throughout our woods, though still 2
inches or less in height. Town of Cooperstown, Manitowoc County
During the afternoon there was a conspicuous
smoke plume visible from UWGB, from a fire apparently
originating at about the area of the base of Longtail Point/Sensiba
Marsh area. The roof in the foreground of the photo is the Weidner
Center. I'll amend this entry if I find out more about the circumstances.
The fire above was started by the WIDNR and it was near the base
of Longtail Point--confirmed by Heather Gentry who phoned me from
the site at about 3:15 pm.
Eastern Garter Snake on the road, Brown County.
||Blue-spotted Salamanders reported
out, Brown County (Amy Wolf).
This is the first day that I saw a wood chuck out and about,
Brown County, Allouez.
Eastern Garter Snake (Thamnophis sirtalis) observed, Oconto
County, Abrams area (Juniper Sundance).
Wood ducks at Shawano (Joel Whitehouse.
The earliest plants of Alnus incana (speckled
alder), Populus tremuloides (trembling
aspen) and Corylus americana (American
hazelnut) have begun to flower (anthesis) and many others
are very close, Brown County, City of Green Bay.