A painful blossom it steals your heart.
Binds you in illusion.
Its fragrance sweet, as though a rose,
Betrayal of the promise given.
Alluring, your soul is taken,
But passions left ignored.
Thorns scratch, blood weeps,
Precious hope burned to ashes.
A painful blossom it captures you;
binds you in illusion.
Nice intro, but add a comma in between blossom and it, so it is grammatically correct.
Fragrance sweet as an enchanted promise. "enchanted promise seems cliche and a little forced here. Try using a different simile. It's up to you.
Thorns scratch; blood weeps.
Hope is burned to ashes. You sure use a lot of semicolons. Using too many can make the poem monotonous to read. Don't be afraid of the comma!
Alluring on it consumes your soul;
passions left ignored. Nice, but what passions? Maybe another word choice here?
Red as though a rose; "Red as though a rose" can be rephrased to "As red as a rose". It will sound better that way. I think you could try a more original simile though.
heat blazes in contempt.
Spurned once more in depths of agony;
thoughts a jumble are. <--I have mixed feelings about this line. Did you intend to make that sentence jumbled up? If you did, that is a really cool idea, just make it so it's more obvious that the thoughts are jumbled up and it just isn't a grammatical error. Something like "jumbled are thoughts my", or something.
Brambles choke; a dream fades. Nice metaphor!
Pricked in shame and silence. Meh, I think this isn't the tone you want to go for. I have the feeling this poem is about someone, an addict, maybe, who has lost his or her way in the world. If she is being mocked, you didn't mention it earlier, which gives this an abrupt feel that seems like it has nothing to do with the rest of the poem. Does that make sense?
Fragrance sweet as an enchanted promise.
Alluring on it consumes your soul;
thoughts a jumble are.