Getting different lolly, I left heavy plant (4,2,3,6)

I believe the answer is:

lily of the valley

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

'plant' is the definition.
The answer is an example.

'getting different lolly i left heavy' is the wordplay.
'lolly i left heavy' anagrams to 'LILY OF THE VALLEY'.
But, I'm unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for lily of the valley that I've seen before include "Woodland inhabitant" , "Flower" , "bloomer" .)

I've seen this clue in The Daily Express.

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