The most common and most likely answer to this crossword clue is the 8 letter word LAVENDER
I've seen this crossword clue in The Times
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More clues leading to the result LAVENDER
- Bank containing a very fragrant plant
- Perfume and bible wrapped by mortgagee
- Originally Vicky learned about perfume
- Perhaps bank holds a very fragrant plant
- Plant that may destroy a toilet?
- John Terminator
- Stopper under WC that’ll make it smell nicer!
- Flowers for old tennis champion accepting downfall
- Pike played by him — a victory, when reeled into the bank
- Toilet repairer beginning to leave – it should smell nice
Buddy explains!

The straight part
We know that "fragrant plant" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fragrant plant = lavender.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 LAVENDER mean?
LAVENDER noun- Any of a group of European plants, genus, Lavandula, of the mint family.
- A pale purple colour, like that of the lavender flower.
- To decorate or perfume with lavender.
- Having a pale purple colour.
- Pertaining to LGBT people and rights
- Pertaining to lesbian feminism; opposing heterosexism.