I tested this product while growing from seed, young plants during and after transplanting, and on a new lawn. The results were fantastic. I used plain water on half of what I grew and the Bountiful Harvest® Prebiotic on the other. Results took two weeks – two months to show. Now everything I used the stimulant on is 3 to 4 times larger. The blooms are equal to the plant size. I would strongly recommend this product and was very satisfied with the results.