I don't know enough about bullets to know if it's possible, but this is already a thing.
I don't know enough about bullets to know if it's possible, but [this is already a thing.](http://www.independent.co.uk/news/world/these-cigarette-butts-grow-into-trees-when-thrown-away-10336029.html)
That way war can bring both bullets and flowers. Problem solved. Attention Hippies; we can all go home now, we won.
But for real, it's a really cool conceptual idea, but I'm not sure on the practicality.