Stacker used information from forestry and landscaping sites to compile a quiz to identify trees by looking at their leaves.

Frogeye leaf spot (FLS) is a fungal disease named for its signature visual pattern: an eye-like circular or angular lesion on leaves of infected plants. The small spots of this soybean leaf disease ...

Fossil plants reveal the evolution of green life on Earth, but the most abundant samples that are found -- fossil leaves -- are also the most challenging to identify. A large, open-access visual leaf ...

Observing and identifying trees is a type of play that benefits kids in multiple ways. For starters, research has found that simply being around trees improves cognitive development and lowers the ...

Gray leaf spot starts before you see it. Are you scouting early enough to catch it before it moves up the canopy?

Leaf miners are just one of the many pests that affect our gardens. The two leaf miner types most often found in Marin are the Liriomyza spp., a mostly black and yellow fly with clear wings, and ...

In just a decade, this unusual disease has spread from Ohio across the Northeast. Scientists are testing treatments, but answers come slowly. Backlit leaves of an American beech tree show dark bands, ...