I've heard that flushing out the nutes for a week or so before harvest helps produce a tastier crop that is easier to burn. I have no idea if this is true or not, but regardless, how does one flush an organic soil? Since the nutes are on constant slow-release and impossible to separate from the living soil itself, how would one ensure that the roots stop 'eating' a week before harvest with an organic grow?
You are correct this action isn't required for organic soilers, but don't let that stop you! as the biz of flushing, washing the rootlets of excess nutes ..does remove any extra food from the rootzone, tho not compulsory unlike salted nute growers, or even dwc grows
this has been debated over and over again. there is no need for flushing in organics. not only that but, unless you use soluble nutes flushing will do nothing.
I actually sent and searched out an answer to why you don't flush. This is from Microbeman: " Sat Jul 18, 2015 12:11 pm If someone has too much N in their soil, first assuming that this has been established through some form of testing, second assuming that they believe they have applied this nitrogen in some sort of soluble form, we might conclude/surmise that this has occurred accidentally, perhaps by overdoing an alfalfa tea or something like this. Otherwise we might surmise they are not using organic/natural best practices growing techniques and have applied some sort of available nitrogen (ammonium nitrate, etc) If one is applying solid best practice for natural/organic growing the nitrogen used by the plant comes from N which is sequestered in organic matter and bound to 'soil' (the growing media). The N is made available to the plant through processes where the nutrient is released by organic acids excreted by roots as well as various microorganisms, converting it to ionic form and depositing it into the soil solution. [I should mention that N also comes from the atmosphere but that is not what we are discussing here] This system is further enhanced/accelerated by microbial predation. Because this N is sequestered and bound up, it cannot be easily flushed out. There may be some minimal nitrogen in the soil solution which could be leached out but this is insignificant. Evidence of this sequestered nitrogen is made apparent when a harvest has been taken and there remains sufficient N in the same soil to support the growth of new transplants. Now going back to the individual who 'accidentally' applied N, if their volume of growing media is small enough she/he may be able to flush some out with plain water in a one shot exercise. The downside to this is ruining your soil and plant by overwatering. Better to just wait it out."