Winterthur
Garden · Delaware
Henry Francis du Pont's 979-acre former estate near Wilmington, opened as a museum in 1951, pairs a renowned American decorative-arts collection with a 60-acre naturalistic garden, where mature oaks, tulip poplars, and Japanese maples color 25 miles of trails into late October.
Don’t miss
Peak: October 27–October 31
Color builds from October 19 · mostly bare by November 20
Sampled at Winterthur’s own coordinates and elevation (99 m) rather than a regional average.
4 weather points cover Delaware, and the model shifts their answer 3 days later, which is what it takes to match 1 published peak date from smokymountains.com. Against Delaware's own climatology, the 2026 weather puts the peak 4 days earlier. How the forecast works
When to go to Winterthur
The color window runs about 19 days, holding until around November 7. Against Delaware overall, that is 5 days earlier.
From Philadelphia it is about 25 mi, close enough for a morning drive. Baltimore is about 65 mi out.
Winterthur on the map
Drag the date slider to see when color reaches this corner of Delaware, or tap a pin for that stop’s own peak window.
More things to do in Delaware
Plan from a city
Frequently asked
- When does Winterthur peak in 2026?
- Peak color is predicted for October 27–October 31 (best estimate October 29). Color starts around October 19 and is mostly bare by November 20.
- How do I get to Winterthur?
- The closest city is Philadelphia, about 25 mi away. It's part of Delaware's fall lineup.
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