The top health official in the state said buyers of medicinal cannabis will know when the pot was grown, whether pesticides were used or even how often it was watered, but not the potency, reports Howard Fischer at the Arizona Daily Star.

The Department of Health Services is writing the rules for distribution of medical marijuana once the new law takes effect in March 2011.

“We’ve got some basic labeling requirements,” state health director Will Humble said. “But we haven’t gone that extra step to require an analysis to determine exactly how much THC in every single piece of inventory. And I doubt that we’re going to go there.”