||Observation (Click on links for photos)
(Panicum virgatum) in flower (Anthesis), UWGB. Rough goldenrod
(Solidago rigida) is also in flower on UWGB-- I saw a few plants
in gardens that were flowering at least as early as Saturday, Aug
9. I also saw the first open flowers of large-leaved aster
(Aster macrophyllus) in Brown County, town of Eaton.
(Andropogon gerardi) in flower (anthesis), UWGB. The flowers
have been fully formed for over a week, but this is the first day
they matured to release pollen.
||Although the earliest individuals
of several goldenrod species (Solidago juncea, S. graminifolia,
S. canadensis) have been noted in northeastern Wisconsin, they
are still not conspicuous in most locations. We can expect a major
change in the appearance of old fields and roadsides over the next
few weeks as the Asters and goldenrods begin to flower in large numbers.
Ragweed hayfever has begun, but is still relatively minor.
||The tall prairie grasses
have begun the late season growth phase and are now very conspicuous
in the UWGB prairie, although they have not yet begun to flower. Yellow
coneflowers (Ratibida pinnata) and the Silphiums
(compass plant, prairie dock and prairie rosinweed)
are very conspicuous now.
||Streams in northeastern Wisconsin
have risen with the recent rain and are at moderate levels in general,
although there has been some flooding in the last week due to locally
heavy rainfall. In southwestern Wisconsin, the Wisconsin River
is very low with large exposed sandbars.
||Green Bay received 0.60
inches of rain.
First day of flower for
Canada Goldenrod (Solidago
canadensis) on UWGB's Cofrin Arboretum. This is our most abundant
goldenrod in NE Wisconsin, forming large clones in abandoned fields.
Because it flowers at about the same time that late summer hay fever
begins, it is often incorrectly believed to be the cause. The great
majority of hayfever problems beginning in the next week or so and
continuing into September, are caused by common
ragweed (Ambrosia artemisiifolia)(Gary Fewless).