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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 2011 Mouse-over the photo for the identity of the subject

June 26 Beginning about June 24 there has been a virtual snow storm of "cotton" from local Populus deltoides (eastern cottonwood) trees in the Green Bay area. Although this dispersal began on 06/12, the frequent rains since then have kept the cotton wet and less able to be blown away from the trees. Dry, sunny days on the 24-26th have released the bulk of the cotton. Each tiny seed of the cottonwood has a tuft of hairs attached that increase the distance the seeds can be moved by wind.
June 25 Calystegia sepium (hedge bindweed) in flower.
June 23 The familiar (alien) pasture grass Phleum pratense (timothy) is in flower (anthesis).
June 22 Cornus racemosa (gray dogwood) in flower.
June 21

Potentilla norvegica (rough cinquefoil) in flower.

Green Bay received 1.28 inches of rain.

June 19

First day of flower for Leonurus cardiaca (motherwort).

After light rain for the previous 3 days, Green Bay receives 0.7 inches of rain.

June 18 I see that Physocarpus opulifolia (ninebark) is in full flower now in some local sites.
June 17 Coronilla varia (crown vetch) an invasive species in our area, is now beginning to flower.
June 16 Erigeron annuus (daisy fleabane) and the grass Agrostis gigantea (redtop) are in flower.
June 15

Prunella vulgaris (heal-all) in flower.

Green Bay received 0.76 inches of rain today.

June 14 Here's a panorama of a part of the prairie on UW-Green Bay's Cofrin Arboretum. If you click on the image it will zoom to full size and you can move the slider to view a full circle of the area around Prairie Pond.
June 13 Rumex crispus (curly dock) in flower (anthesis). Also the common invasive Vicia cracca (cow vetch) is in flower.
June 12 Populus deltoides (eastern cottonwood) are dispersing their "cotton" (actually seeds with a tuft at the top to enable wind dispersal).
June 10 Leucanthemum vulare (ox-eye daisy) and Ranunculus acris (tall buttercup) in flower.
June 09

Our local forest are about at full leaf-out now, except for black ash swamps.

Start of flower for Tradescantia ohiensis (spiderwort, photo above) and the invasive grass Phalaris arundinacea (reed canary grass). A big change in weather in Green Bay as today's temperature reached only 54° at noon.

June 08

Another record high temperature today as Green Bay reached 93° F, breaking the previous record of 89° in 1976. In the evening a cold front moved through and the temperature fell from 82° to 69° between 9 and 10 p.m. The overnight low was 52°.

Achillea millefolium (yarrow) in flower.

June 07

Green Bay set a new record high temperature for this date at 97° F. It was still 92° at 7 p.m. and the overnight low was 78°.

Robinia pseudoacacia (black locust) in flower.

June 05

Lightning bugs out, Oconto County, Pensaukee (Tom Erdman). I've seen none yet in Green Bay.

Dactylis glomerata (orchard grass) in flower (anthesis). Trifolium repens our common white clover is now in flower.

June 04

First day of flower for Cornus alternifolia (alternate-leaved dogwood).

First day for spittlebugs at my usual site to check.

June 03 Painted turtles out crossing roads for egg-laying, Forest County (Tom Erdman).
June 02 Tragopogon dubius (yellow goat's-beard) has begun to flower.
June 01

Poa pratensis (Kentucky bluegrass) began to flower in City of Green Bay. This is about a week later than last year. This species is abundant in our area and may cause "hayfever" symptoms in some people during the next week or two. Other common grasses have not yet begun to flower here, though several will begin within the next few days.

A very windy day, with average winds of 18 mph and gusts over 40 mph.

This is the first day that mosquitos were obnoxious.

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Last updated on May 20, 2015