Motel site is source of Yule deco (9)

I believe the answer is:

mistletoe

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'yule deco' is the definition.
I can't tell whether this defines the answer.

'motel site is source of' is the wordplay.
'is source of' indicates anagramming the letters.
'motel'+'site'='motelsite'
'motelsite' anagrammed gives 'MISTLETOE'.

Can you help me to learn more?

(Other definitions for mistletoe that I've seen before include "put up for a Christmas function?" , "opportunity to kiss?" , "Valley of the -, best seller by Jacqueline Susann" , ""Kissing" sprig" , "White-berried parasite" .)

I've seen this clue in the Sydney Morning Herald.

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