This product was mentioned in a post a few weeks ago, so I did my "due dilegence".
The manufacturer states you can use in flower- as a general guide: but most applications are not smoked.
That said, it has a very short half-life (for lack of a better term) and starts to degrade in 30 minutes.
Yesterday, I misted 2 wk old seedlings- a 5 week old clone and 3 week old plants in flower.
I plan to soak my next set of seeds for 10 minutes as recommended- and repeat as above, but not apply to flowering plants past week #3.
Axiom triggers a stress defense and the plant goes into hypergrowth (survival) mode- but does not simply elongate the current growth (that would swell-make the plant look bigger, but weaken the plant), as some growth/bud hormone/growth regulators do.
What's impoprtant to me is the effect on yield/quality and as I often say:
It's all bullshit, until you smoke it!