The most common and most likely answer to this crossword clue is the 10 letter word SUNFLOWERS
I've seen this crossword clue in The Guardian
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More clues leading to the result SUNFLOWERS
Buddy explains!
The straight part
We know that "occupants of bed" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case occupants of bed = sunflowers.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 SUNFLOWERS mean?
SUNFLOWERS noun- Any plant of the genus Helianthus, so called probably from the form and color of its floral head, having the form of a large disk surrounded by yellow ray flowers.
- A bright yellow, like that of the flower petals.
- Any flat, radially symmetric organic compound such as coronene