This is the 3514th most frequent German word.
laub
Foliage or leaves.
The word 'Laub' here is used to mean 'leaves' collectively as those falling from trees during autumn.
Im Herbst fällt das Laub von den Bäumen.
In autumn, the leaves fall from the trees.
In this context, 'Laub' describes fresh, vibrant leaves collectively during the spring season.
Das frische Laub im Frühling ist besonders grün.
The fresh foliage in spring is especially green.
Here, 'Laub' refers to fallen leaves as the gardener is actively cleaning them up.