The most common and most likely answer to this crossword clue is the 5 plus 6 letter word CRAZY PAVING
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Buddy explains!
The straight part
We know that "part of garden?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of garden? = crazy paving.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 CRAZY PAVING mean?
CRAZY PAVING noun- Paving with pieces of irregular size and shape that fit together and (approximately) cover the surface.