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Observations by Gary Fewless for Green Bay WI (Lat.N 44.51° Long. W 88.02° ), except as noted. For flowers lacking conspicuous petals or sepals I define "anthesis" as release of pollen by mature anthers.

June 2004

Date Observation (Click on links for photos)
Jun 30 New species in flower in Brown County: Cichorium intybus (chickory), Calystegia sepium (=Convolvulus sepium, hedge bindweed), Melilotus alba (white sweet-clover), Cicuta maculata (common water-hemlock), Sonchus arvensis (sow thistle).
Jun 29

Several additional plants began to flower in the last few days: Verbascum thapsus (mullein), Catalpa speciosa (northern catalpa, cultivated only), Sambucus canadensis (black elderberry), Agropyron repens (quack grass).

This appears to be a banner year for Penstemon digitalis in the UWGB Cofrin Arboretum prairie. They are numerous and robust and in peak flower now.

Jun 28

Fireflies or lightning bugs (Lampyridae) common now; I didn't record the first date I saw them, but I think it was about one week ago. Town of Cooperstown, Manitowoc County (Joel Trick).

The above note is very interesting. Lightning bugs appear in my neighborhood (Allouez, Brown County) in many years in late May or early June. It has been my observation that they are strongly inhibited by rainy and cool weather, and May and most of June would certainly qualify in that area this year. We saw lightning bugs on May 20 in far southwestern Wisconsin (Grant county), but still have not seen them in our neighborhood (Gary Fewless).

Phleum pratense (timothy) and Geum aleppicum (yellow avens) in flower (anthesis) UWGB.

Jun 27

Cool weather continues in northeastern Wisconsin with highs of 71 F and lows of 49 in Green Bay for each of the last two days. Rhinelander's highs were in the 60's and the low was 39 F on the 26th.

Cirsium arvense (Canada thistle) in flower, City GB

Jun 24 A couple of species in flower that I neglected to enter here previously: Coreopsis lanceolata (sand coreopsis), Viburnum rafinesquianum (arrow-wood), Thalictrum dasycarpum (tall meadow-rue).
Jun 23 Severe thunderstorms and a few "funnel clouds" reported at various places in Wisconsin. The tornado sirens went off several times in the evening, but most of the severe weather passed either south or north of my location in Allouez.
Jun 21

Heliopsis helianthoides (false sunflower) and Melilotus officinalis (yellow sweet-clover) in flower, UWGB.

Tragopogon pratensis (lesser goat's-beard) in flower, Allouez.

Jun 20 Cornus racemosa (gray dogwood) and Hypericum perforatum (St. John's-wort) in flower, UWGB.
Jun 19

Rubus allegheniensis (blackberry) in flower, Florence Co.

A cold morning in the north--Rhinelander reported a low temperature of 36F (Green Bay's low was 47).

Jun 18

The rainy weather of May and the first half of June has kept many rivers high and potentially dangerous for boaters and others spending time on and near the rivers. There have been several fatalities already this year in Wisconsin streams.

Mosquitos are more abundant than they have been in the the last couple of years, but not particularly bad (in my experience) in northeastern Wisconsin (others have reported heavy mosquito populations, but over the long run, this year doesn't seem extreme to me).

After a couple of days in Florence County, I have seen very little damage to the forest from the forest tent caterpillars (we tend to note only when they are abundant and omit comment when they are not). As a consequence, the "friendly flies" that parasitize the forest tent caterpillars are also not abundant. Both species may yet make a showing if conditions are favorable.

Jun 17 The common old field weeds Hieracium aurantiacum (orange hawkweed) and Chrysanthemum leucanthemum (ox-eye daisy) are conspicuously in flower on disturbed, sunny sites in northeastern Wisconsin.
Jun 16 1.27 inches of rain in Green Bay.
Jun 15

Medicago sativa (alfalfa) and Bromus inermis (brome grass) in flower, Allouez.

Baptisia alba (white wild indigo) and Rosa multiflora (multiflora rose) in flower UWGB.

Jun 14

First day of flower for Convolvulus arvensis (field bindweed), Allouez, and Carduus nutans (nodding thistle).

Geum triflorum (prairie smoke--planted individuals) is in fruit.

Jun 13

While I was out of town for a few days the following species began to flower (since June 9) on UWGB: Crataegus crusgalli (cockspur hawthorn), Lithospermum officinale (common gromwell), Robinia pseudoacacia (black locust), Galium mollugo (white bedstraw).

I have seen very few Tiger Swallowtail butterflies in northeastern Wisconsin this year.

Jun 09 Vitis riparia (wild grape) and Tradescantia ohioensis (spiderwort--just a few flowers) in flower, UWGB.
Jun 08 Plants beginning to flower: Hieracium florentinum (yellow hawkweed), Acorus americanus (sweet flag) Tradescantia ohioensis (spiderwort--just a couple of open flowers today), Smilacina racemosa (spikenard), Solanum dulcamara (bittersweet nightshade), Iris virginica (blue flag), UWGB.
Jun 07 Dactylis glomerata (orchard grass) in flower (anthesis), UWGB. It started 2 days ago in Allouez and is now in peak flower there.
Jun 06

Iris pseudacorus (yellow iris), Zizia aurea (golden alexanders), Hieracium aurantiacum (orange hawkweed), Lotus corniculatus (birdfoot trefoil), Sanicula gregaria (clustered black snakeroot), Heuchera richardsonii (prairie alumroot), Osmorhiza claytonii (sweet cicely), Chrysanthemum leucanthemum (ox-eye daisy), Achillea millefolium (yarrow) first day in flower, UWGB.

Geranium maculatum (wild geranium) and Hydrophyllum virginianum (Virginia waterleaf) are among the most conspicuous flowering plants in Mahon woods, UWGB.

Populus deltoides (cottonwood) is dispersing its seeds now. This is the "cotton" from which it derives its common name.

Any guesses on the 3 flowers shown above? One is easy, one medium difficulty and one difficult, not necessarily in the order shown.

Jun 05

Rubus occidentalis (black raspberry), Heracleum lanatum (cow parsnip), Vicia cracca (cow vetch) in flower, UWGB.

Mosquitos just now getting obnoxious on UWGB, and only in the wetter woods.

Dactylis glomerata (orchard grass) in flower (anthesis), Allouez.

Jun 04

Acer saccharinum (silver maple) dropping mature fruit, Allouez (some immature fruits were dropped earlier).

Lonicera dioica (red honeysuckle) in flower and Osmunda cinnamomea (cinnamon fern) dispersing spores, Ashwaubenon.

Jun 03 Cornus alternifolia (alternate-leaved dogwood) and Anemone canadensis (Canada anemone) in flower, UWGB.
Jun 02

Potentilla simplex (common cinquefoil) in flower, UWGB.

Potentilla argentea (silvery cinquefoil) in flower, DePere (on barren sites in full sun this species may flower at least a week earlier than in lawns, grassy roadsides, etc.).

Jun 01

This is the first day that I've seen Oxalis stricta (wood sorrel) in flower on UWGB's Cofrin Arboretum (some flowered earlier near buildings). There is widespread flooding of local streams following the recent rains (1.6 inches in the last two days on land that was already thoroughly saturated).

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Last updated on May 20, 2015