I was sick, raining and temperature freezing.
Aug 09, Weather is the primary factor for why your maple tree leaves are not turning red in fall.

In autumn, the leaves of sourwood, sumacs, dogwoods, and some maples often turn red or purple like the Brandywine Maple. Sugar maple leaves can be a brilliant orange. Red Maple trees such as Autumn Blaze Maple or October Glory can have shades of orange and red. October Glory is an excellent Estimated Reading Time: 4 mins. Red Fall Leaves Many of the most colorful leaves are on the trees that turn red in autumn. Some of the best trees for graduated displays that finalize in a red hue might be Downy serviceberry, blackgum, persimmonand sassafras.
The hues and tones of red vary from species to species. Red Sunset is a red maple cultivar with superior fall color and good branch structure. Winter buds, clusters of small winter spring flowers, leaf stems, twigs, and winged summer fruits are all reddish colored. The glossy green leaves persist on the tree turning orange-red to brilliant red in the fall.
Nov 12, The Red Sunset maple (Acer rubrum 'Red Sunset') is one of the most popular maple trees that turn red in the fall. This variety features green leaves in the summer that turn fiery red or.