I received this product as a free sample. I was not asked to provide a review but said that I would. I did a video showing me using it for the first time on some distressed blueberry seedlings. Unfortunately, the seedlings did not improve and in fact died altogether. I don't contribute their death to the plant booster in any way, but it also did not help save them. I applied it every week until it ran out and the bushes died despite using it. I can't say what would have happened if I were using ...