Can someone please explain this to me?
Tree on the left,
turned a beautiful gold, right on time.
Tree on the right,
is still completely green.
They are right next to each other.
Are the same species of maple, as far as I can tell.
Why is it that one has changed colors and one hasn't?
The one on the right, the green one, might get a little more light based on it's position.
All of the other trees here have changed color, including more maples about the same size as greenie there and getting more light than greenie, and many have lost most of their leaves.
There he sits, fully leaved and fully green. Why?
Edited to add:
Ok, after reading the comment from Anonymous and checking out the link offered up by Rick, I might be more confused.
The leaf from the yellow tree on the left:
The leaf from the green tree prompting the question.
And another leaf from a huge tree towering over both of them.
To my admittedly untrained eye, the first two leaves look pretty much the same, except the color, while the third is markedly different.
According to the article linked above, the sugar maple, which turns color earlier than the Norway, has fewer points and deep rounded grooves.
The Norway maple has more points, and shallow angular grooves.
If comparing the first two leaves only, I see the yellow having more points, but deeper grooves, and the green having fewer points, but shallower grooves.
Throw the third leaf in there, and it obviously has more points, and deeper grooves than both of the other two.
Maybe none of the trees are sugar or Norway maples?