Why are almost all of Cape Cod's hydrangeas blue? Who is working on a variety that braves the cold and blooms repeatedly?

“Hydrangeas prefer moist, well-draining soil with a slightly acidic pH, so plants with conflicting soil preferences, such as ...

When I moved to Connecticut in July of 2021, I remember driving through neighborhoods looking for somewhere I might eventually want to live and being struck by the beautifully-landscaped yards ...