flushing marijuana?

If my plants are in the ground, how am i supposed to flush? Im going to use bat guano, worm castings, molasses, and thats pretty much it. Im going for a simple grow.
I've heard that if I use all organic nutrients, i don't need to flush them. Is this true?
Thanks!

yup, If you only use what you just said, and don;t feed any of it in the last couple weeks, no need to flush is correct. Flushing is for removing unwanted built up salt thast comes from synthetis nutes mostly. If you only feed organic, and you don't over feed, and not feed during the last couple weeks, there is really no need to flush.

thanks man! and nice grows dude!