I think I was reading on advanced nutrients site.
http://www.advancednutrients.com/paclotruth/
They were against it, but when you picked it apart, they were not claiming carcinogen. It's used all over the world on fruit crops. But, they do run the explanation about the label problem from Humboldt.
It is a tree herbicide, mostly, because it slows the growth. Cities use it for obvious reasons. It has no toxicity for Beneficial Microbes. So, this is how I find things out. I try cast the wide net and get completely out of ganja marketing LIES.
http://efw.bpa.gov/environmental_services/Document_Library/Vegetation_Management/sheets/Paclobutrazol.pdf
It is used in Bonzi. They are pot plants.
Just kidding.
http://www.actahort.org/books/167/167_37.htm
So, this is a natural plant hormone. It is used and consumed by the plant as a signal.
http://en.wikipedia.org/wiki/Paclobutrazol
I can't see that there is any residue left to consume if I'm careful. Here is a fact. When ever I look for uses in consumables like fruit, it is praised. When I look at the effects on ag workers, normal precautions (don't snort it). Effect on the fruit, none.
Approved for human consumption. NO. Will harm Mice livers Yes, if feed 1250 ppm per day for weeks. It is a difficult metabolite, not a carcinogen If anyone wants to debate that I'd be glad to review any serious science, but not bald clams.
Now we both know the most bullshit level is consumer marketing, and ganja is by far the worst snake oil. And there is a lot of Mr. Natural fear or "chemicals" left over from the hippies.
Next fact.
When I look with negative terms for that side, ALL I see is the silly hippy angst. Every hit is a forum, here of course. Or the hit is a marketing ad. Oh, gloom and doom.
These ads make wild claims that are not referenced and even using their search terms about banned in Europe, I can't see it.
Fruit raising Praised, but Ganja raising Crazed. My Opinion.
*My advice is for no one and especially not myself.
Just putting up some info. I can neither confirm or deny...blah, blah...