The most common and most likely answer to this crossword clue is the 8 letter word ORANGERY
I've seen this crossword clue in Financial Times
O
R
A
N
G
E
R
Y
More clues leading to the result ORANGERY
- Park-keeper visiting old Yankee where fruit-trees grow
- Source of fruit provided by old park keeper, Yosemite, primarily
- Track to follow round peaks where fruit grows
- Warden hiding in old Yankee’s tree house
- Wrath seen in leaderless Conservative hothouse
- Men furious earl’s broken into hothouse
- Where fruit grows in bottom of gully below mountains in Oregon
- Round yard in which patrolman’s planted collection of fruit trees
- Old park-keeper, Head of Yeovil Conservatory
- Greenhouse in another colour over railway
Buddy explains!

The straight part
We know that "Where fruit grows" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case where fruit grows = orangery.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 ORANGERY mean?
ORANGERY noun- A greenhouse in which orange trees are grown.
- A garden or plantation where orange trees are grown.