Conversation so far:
when do red oak trees drop their leaves
The leaves of a red oak start to fall in the spring as new buds begin to grow.
what are some characteristics of the red oak tree
The red oak is a tall tree, reaching heights of more than 70 feet, with brilliant fall foliage.
what do the leaves of a red oak look like
The leaves have a pointed look that easily distinguishes them from the rounded leaves of other oak species.
how are red oaks different from other oaks
Unlike other oak leaves, a red oak leaf is pointed on the ends and displays bristle tips, which means the tips have growths on the tips that resemble stiff hairs.

Question: what are the undersides of the tree's leaves like
Self-contained rewrite: what do the undersides of red oak leaves look like