Middle seasons - again

Many of these pictures were taken on on a walk at Waterfall Glen nature preserve.  

Middle seasons, I wrote about 10 days ago, are the seasons BETWEEN the seasons.   Because so much changes during the span of what we know as "autumn" or "spring".  Here's a set of 4 things that have changed since 10 days ago.

Henry David Thoreau wrote in his journal on October 8, 1851

The weeds being dead and the weather cooler, the water is more transparent.  Now is the time to observe such weeds as have not been destroyed.  The fishes are plainly seen.  Saw a pickerel which had swallowed a smaller fish, with the tail projecting from his mouth. . . . There is a great difference between this season and a month ago, --  warm as this happens to be, -- as between one period of your life and another.

Based on Google lens's suggestions, the images, clockwise from top left, Northern Red Oak,Goldenrod, Asters, more Asters.

If you take a "middle season" (micro season?) as a 10-day chunk, there would be 36 middle seasons per year.  In each season, there would be typical things blooming, different things ending their blooms.  Each of the four seasons would have 9 middle seasons.  

Yesterday, Jennie and I sat at a bench under an oak at a nearby park.  I remember that the acorns were raining down and bouncing on the concrete sidewalk.  I collected a handful and saved them in a glass bottle on the kitchen window sill.  (I just threw them away because they had become dark, discolvored, and were emitting some liquid.)  Later we sat at the bench and saw that the acorns had stopped dropping and the acorns had been ground into dust on the sidewalk.  Yesterday, there was just the barest sign that there ever were acorns.

You could spend a year sitting on that bench tracking the changes of middle seasons just in that one park.  That reminds me of David George Haskell's A Forest Unseen: A Year's Watch in Nature.