Trees
When each tree turns, the colors it brings and how much of the forest it makes, from Québec to the Smokies and out to the Rockies, with the color of open ground and planted trees along the way.
Where the weeks and shares come from
The shares are four grades, from “in its own places” to “most of the forest”, rather than measured proportions. The weeks were measured at Harvard Forest for ten trees; the record’s words supply the rest. Beyond the maple country the weeks move by a rule until observations replace it, except where a source gives a local window. Where the weeks were measured, gray begins around the observed days when half the leaves had fallen; it does not mean every leaf was gone. This year’s mark is Autumn Guide’s model of the regional forest state, beside the reports with their dates; it is never an estimate for an individual tree.
Oak and hickory country
Peak by the model: Oct 24, 2026 (model of Oct 27, 2026).
Reports: at its peak (Oct 15, 2026).
The week of Oct 27, 2026.
Rest on a slice, or reach it with the keyboard, for its name and week.
The forest of the oak and hickory country, one column a week: green before the color, each tree’s color at its weeks, brown as it fades, gray when bare.
the first to turn at the top, the evergreens at the foot of the trees; the week beginning under each column
Peak by the model: Oct 24; at its peak.