"falling leaves" is correct and usable in written English.
You can use it to describe the action of leaves falling from trees in autumn. For example: "The sound of falling leaves was pleasant on the crisp autumn morning."
I love the falling leaves, don't you?
Bring the umbrella, and watch for falling leaves.
Outside, Max was still whirling beneath the falling leaves.
The designer again had a name for it: "a very sophisticated idea of falling leaves".
So, for three of the seasons, easy, familiar signifiers: sunshine, falling leaves, snow.
Certainly "Autumn Leaves" was among his most soothing, with its cascading arpeggios evoking falling leaves.
"I will not forget you, piteous green leaves falling, leaves falling".
In No. 15, fat falling leaves compete with the scattering of buildings.
From inside, the translucent walls glow in the sun, the shadows of falling leaves playing against the surface.
"The diversity of objects that elicit this call is broad, however, including nonthreatening vultures, pygmy falcons and falling leaves".
PARIS — Woolly, hairy or feather light, autumn knits have one thing in common: They cover the body like falling leaves.
