I plant story clue about devotion to a leader (11,4)

I believe the answer is:

personality cult

I'm a little stuck... Click here to teach me more about this clue!

'devotion to a leader' is the definition.
I know nothing about this answer so I can't tell whether this works.

'i plant story clue about' is the wordplay.
'about' indicates anagramming the letters.
'i'+'plant'+'story'+'clue'='iplantstoryclue'
'iplantstoryclue' with letters rearranged gives 'PERSONALITY CULT'.

Can you help me to learn more?

(Another definition for personality cult that I've seen is " excessive adulation of a leader".)

I've seen this clue in The Irish Times.

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