Hobo tossed glue in tree (4,3)

I believe the answer is:

blue gum

'tree' is the definition.
(blue gum is a kind of tree)

'hobo tossed glue in' is the wordplay.
'hobo' becomes 'bum' (synonyms).
'tossed' is an anagram indicator.
'in' means one lot of letters goes inside another.
'glue' with letters rearranged gives 'lueg'.
'bum' placed around 'lueg' is 'BLUE GUM'.

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

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