The most common and most likely answer to this crossword clue is the 10 letter word GREENSWARD
I've seen this crossword clue in The Daily Telegraph
G
R
E
E
N
S
W
A
R
D
More clues leading to the result GREENSWARD
- Grassy area in politician’s part of constituency
- Verdant area with gardeners working
- Feminist tours New South Wales, Australia sustained by Dutch grass
- Grass-covered ground? Environmentalists’ department
- Amount of work raised by wardens ordering turf
- Common vegetables area produces
- Electoral area undermining environmentalists is common
- Grassed area gardeners prepared round wicket
- Wife has various gardeners going round grassy area
Buddy explains!

The straight part
We know that "Grassed area" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case grassed area = greensward.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 GREENSWARD mean?
GREENSWARD noun- A tract of land that is green with grass.