Oak and hickory tree leaves tend to produce orange ... But the thing that shuts down fall color is a hard frost. If you get a big freeze, everything just kind of stops. But if we do stay in ...

"There's something about the trees changing colors in the fall that just captivates people ... that the trees have a red or purple leaf throughout the summer. Not all trees have anthocyanin, however.

Oak leaves are beginning to take on their deep shades at last, the VDF said in its Oct. 23 fall foliage report. Virginia's ...