The most common and most likely answer to this crossword clue is the 4 letter word HERB
I've seen this crossword clue in The Guardian
H
E
R
B
More clues leading to the result HERB
- Rosemary, say, in another bed
- Rosemary, perhaps, the female bishop
- Insecticide in this place comes with a drink
- Eg Rosemary’s part of Wetherby
- Letters associated with pencil broken by Queen Rosemary, perhaps
- Woman’s British: Rosemary?
- Spice Girl’s back from nightclub
- Cutting from rather bushy aromatic plant
- Partner following him? A plant
- Father Brown entertains sage, possibly
Buddy explains!
The straight part
We know that "plant" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case plant = herb.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 HERB mean?
HERB noun- Any green, leafy plant, or parts thereof, used to flavour or season food.
- A plant whose roots, leaves or seeds, etc. are used in medicine.
- Marijuana.
- A plant whose stem is not woody and does not persist beyond each growing season
- Grass; herbage.