I have been using Magic green for the last 3 crops, on my first crop I used it all through out flower and I always had leaf spotting issues and seemed like it was too strong and taking away from the nutes in the soil. In my second crop I used it up to week 3 in flowering and I had healthy looking plants all the way up to harvest. In my last crop I used it during veg and flower up to week 4 and again just noticed nute burn and deficiancys. I have read that this stuff is a very powerful foliar feed spray and should be used with caution. I only use it on my mothers and during veg. if needed. I dont think I would ever use it up to harvest as I dont think I would want to smoke it. Anyone used it up to harvest?