Dave Bonta's short poem is about a quiet day outdoors at the turn of the season. The speaker, along with at least one other person, sits among asters, the late-blooming flowers, for the whole morning. Nothing happens, and that seems to be the point. The poem lets time pass slowly, almost without comment.
The second stanza shifts from morning to evening and from stillness to color. "Red visions" suggest a sunset, or perhaps red leaves, though the poem doesn't say which. The last line, "came to fall," is clever because "fall" can mean both the season and the act of dropping or descending. Evening falls, light falls, and autumn arrives, all at once.
The speaker never states a feeling directly, but the calm, patient tone suggests contentment with a touch of wistfulness. The mood is peaceful and a little dreamy, as if the day itself were a gentle farewell to summer.