DELAWARE, Ohio (WCMH) – An invasive insect that leaves a pattern on elm tree leaves was detected in Ohio for the first time this summer. Officials found a population of elm zigzag sawflies at the U.S.

A Japanese plant species with a peculiar leaf pattern recently revealed unexpected insight into how almost all plants control their leaf arrangement. Leaves can be enjoyed for their shade, autumn ...

Wherever trees grow, sooner or later their leaves get wet. For trees in wet environments, this can be a problem if films of water cover their stomata. These tiny pores allow carbon dioxide to enter ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Hickory trees have a leaf with less than nine leaflets and an alternate leaf ...