The most common and most likely answer to this crossword clue is the 7 letter word ESPARTO
I've seen this crossword clue in Financial Times
E
S
P
A
R
T
O
More clues leading to the result ESPARTO
- Grass: some caught in middle section of besom
- Grass box breaking toe badly
- Greenery some pasture’s part of
- Quarter thus includes area for grass
- Grass – druggies partook just some of it
- Gnossiennes, part of which this ropemaker‘s got into
- Pears lost to grass
- Producer of paper‘s got rap several upcoming mentions
- Spanish grass, leaving Spain, operates on the run
- Seaport dispatched grass
Buddy explains!

The straight part
We know that "Grass" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case grass = esparto.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ESPARTO mean?
ESPARTO noun- Either of two species of perennial grasses used for fibre production, and for making paper: