noun
foliage
FOH-lee-ij/ˈfəʊliɪdʒ/
The leaves of a plant or plants collectively.
The maple tree's thick foliage shades our patio in the summer.

Etymology
Early foliage named ornamental representations of leaves or branches. The selected meaning names the leaves themselves collectively, rather than their depiction in a design.
In context
the leaves and foliage of this plant have a a very strong Aroma
More examples
- The hillside glows with red and gold foliage each fall.
- Check the plant's foliage for signs of insect damage.
- A small bird disappears into the dense foliage.
Forms
foliar adjective — Relating to or occurring on leaves.
Similar words
- leaves
- Names the individual plant parts rather than treating them collectively.
- greenery
- Refers broadly to green plants, not just their leaves.