The most common and most likely answer to this crossword clue is the 10 letter word JARDINIERE
I've seen this crossword clue in The Daily Telegraph
J
A
R
D
I
N
I
E
R
E
More clues leading to the result JARDINIERE
Buddy explains!
The straight part
We know that "Planter" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case planter = jardiniere.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 JARDINIERE mean?
JARDINIERE noun- A plantstand or flowerpot, especially one made of decorated pottery or porcelain.
- Vegetables served as a garnish over meat.