The most common and most likely answer to this crossword clue is the 8 letter word GRUBBERS
I've seen this crossword clue in Independent
G
R
U
B
B
E
R
S
Buddy explains!
The straight part
We know that "These stir soil" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case these stir soil = grubbers.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 GRUBBERS mean?
GRUBBERS noun- One who grubs.
- A machine or tool of the nature of a grub axe, grub hook, etc.
- An attacking short distance kick in behind the defence in which the ball is bounced along the ground, using the uneven bounce of the ball to make it difficult for the defence to retrieve.
- A ball that bounces unusually low such that it is difficult for the batsman to hit properly.
- A sweetshop.