I have never heard of not having to flush with any product unless ur trying to flavor with kool aid or something.. lol but either way there are benefits to flushing, even if u don't HAVE TO, propped flush plays such a huge part in flavor and I don't mean just mean nuts or earth flavor, but it brings out the most potentially exquisite flavor of that strain as well as the smell, just me I always flush for those reasons... but no matter which way u decide to go, the MOST IMPORTANT PART is making sure U don't forget to give it its dry period while still planted before harvesting because not only does that help achieve the the flavor and smell and.smoke too but u can also time so it is completely died out when pistols are 75% as long as u do, ur perfect! W.o drying absolutely your biggest fear is gonna be mold since if its still has water in its system at all. Of only will prep cut n cure takes way longer till able to smoke but the absolute worst thing is U have a huge chance of mold while curing since the moisture through out the plant and in all those nooks and crannies talk about misery could.u imagine growing a full grow to loose it on harvest from mold!!! Personally I flush, then dry, and tçhang roots and all upside to cure to get every last drip of good stuff still lingering in root ball stems etc.... sorry song lol