No, no! None of the Daturas or Brugmansias are edible in any part!

From a bit of research, I gather that it is used to make a narcotic - so I agree with Tug - leave it alone! It could be extremely dangerous.

Very approximately, one third of the people who experiment with consuming Datura die.

Absolutely not! It can be lethal!
An added complication comes about if medics deliver an anesthetic, which combined with Datura can lead to respiratory failure.
A fantastic ornamental plant though - my favourite is D.wrightii which has particularly large blooms (even compared to Brugmansia blooms) and is extremely fragrant!