Help me plz. with "The sick rose"!

[Bahrain rose]

Hello everybody ...

I found some difficulties in the poem "The sick rose "
by William Blake ...

O rose , thou art sick !
The invisible worm
That flies in the night ,
In the howling storm ,

Has found out thy bed
Of crimson joy,
And his dark secret love
Does thy life destroy.

My questions are :
* What is the meaning of "thy" ?
* What are the symboles in the poem ?
* What does the poet mean by "thou art sick" ?
* What is the main idea of the poem ?
++++ And plz. if it is accomplishable ... with a succinct explaination !

Thank you very much

Best regards >>>
Rose

[Tdol]

Thy = your (archaic form)
The rose is the symbol
Thou art sick = you are ill

The meaning could be construed in many ways. The rose is often a symbol of love, and the invisible worm is, to me, a sexual symbol. I think it's a bout someone losing her virginity outside the accepted norms, and becoming defiled as a consequence. Other people suggest that it might be about rape, but I am not convinced.

[Bahrain rose]

Hi...

Thanks alot tdol for explaination

Best regards >>>
Rose