The most common and most likely answer to this crossword clue is the 6 letter word TULIPS
I've seen this crossword clue in The Times
T
U
L
I
P
S
More clues leading to the result TULIPS
- I left upset rams without 24D?
- Sheep eat oddly-laid flowers
- Plath poem recited, Chomp with Part of Mouth
- These blooming sheep ate fruit without me!
- Flowers thus oddly found by borders
- You French-kissers come mostly from Holland
- See 5d
- Plants split, redistributed to save essential fruit
- Sheep rounding left one making bloomers
Buddy explains!

The straight part
We know that "24D?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case 24d? = tulips.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 TULIPS mean?
TULIPS noun- A type of flowering plant, genus Tulipa.
- The flower of this plant.