If you mean \"Peter's Professional Plant Food\" I too have had success but agree that Miracle Grow is much easier to find and in my opinion very similar but less expensive. They both contain the major nutrients (nitrogen, potassium and phosphorous) but then also the very important micro nutrients like copper, boron and magnesium so that no matter what your plants need, they get it. I use both Miracle Grow and slow release Osmocote on potted plants because potting soil typically has no nutrients and blooming plants demand lots of nourishment. \"Organic\" methods such as adding compost and mulching are great for improving the tilth and water holding capacity of your soil but compost is not a fertilizer - even though over time adding organic elements will improve the fertility of your soil. In my vegetable and flower beds I use compost, manures, wood ashes and mulch but I also add a spoonsful of Osmocote around my newly planted tomatoes to make sure they will not crack from lack of potassium or calcium. One warning - using a water-soluable plant food like Miracle Grow is very effective but you must follow the package directions of all fertilizers so you don't burn or overfeed the plants. Plants love a little bit more often - rather than a huge meal once a month or so. This is easier to achieve when you use a slow release plant food like Osmocote. Keep growing, Marianne Binetti