I used Happy Frog for all my seedlings last year after they sprouted out of their starter peat pellets. It was always good to them, and I even did some containers with it as well during the summer. I also didn't need to fertilize for a really long time. The nutrients in Happy Frog and Ocean Forest really make a huge difference. Just make sure to pot-up when needed. I didn't do that last year, and got some root bound...