The leaves are starting to fall and colors are starting to change in Duluth and along the North Shore. It is still only between 5 – 25% in the arrowhead, depending on the area, with peak Fall foliage still a few weeks away. Below is an interactive map showing current color reports from MN state parks in the area. Let us know where you are in the Northland and if you are seeing any great fall colors yet.
Four main groups of biochemicals are responsible for the various yellows, oranges, reds and browns that we see in the fall – chlorophyll, carotenoids, anthocyanins and tannins. Each has its own color and chemistry. Varying amounts of these chemicals will give subtle variations in color from one leaf to the next or even from tree-to-tree.