||Rhus typhina (staghorn sumac) leaves are still green (see Aug 16 and Sep 6 photos of the same plant).
||Rhus hirta (staghorn sumac) leaves are still healthy and green, UWGB. I'll post a photo of the same plants over the next few weeks as the leaf color change begins.
||Helianthus giganteus (giant sunflower) well into flower, Marinette County.
||First day of flower for Solidago rigida (stiff goldenrod), UWGB. This site is usually a little later than the Baird Creek area.
||Ambrosia artemisiifolia (common ragweed) is now in flower in northeastern Wisconsin. It is the most important source of pollen for late summer hayfever. It is not uncommon to hear someone remark that they have a "summer cold" during this season, when in fact they are more likely to be experiencing an alergic reaction to the pollen of ragweed. The showy goldenrods (especially Solidago canadensis, Canada goldenrod) are often blamed for hayfever, but they are simply conspicuous during the time that the inconspicuous ragweed is releasing its pollen.
||First day of fully open flowers for Solidago canadensis (Canada goldenrod)
First day of flower for Euthamia graminifolia (grass-leaved goldenrod) on UWGB.