Specifications: I believe it's far better than the name-brand fertilizers on the market. It's got an 18-6-12 mix of every important major and minor nutrient your plants need for a full season of healthy growth, flowering, and foliage color, and if you combine it with early applications of AlgoFlash and Sea Magic, I believe you'll grow the best garden of your life! Park's Containers and Baskets Slow-Release Fertilizer is great for all your container plants. Here's how to use it: When you first transplant your plants into the container, feed them once a week with AlgoFlash, mixing it every other week with SeaMagic for 4 to 6 weeks. This gives plants a huge boost in terms of root strength and foliage growth. After that initial 4- to 6-week period, apply Park's Slow-Release JUST ONCE, following the instructions on the package. And you know what? You're done for the season! The time-release ingredients in this fertilizer will keep feeding your plants right through spring, summer, and into fall! And I expect you to notice the best flowers and biggest fruits yet, plus lots of brnaching and great-looking foliage. You will find that Park's Slow-Release Fertilizer contains ALL necessary minor elements -- magnesium, sulfur, boron, iron, manganese, molybdenum, and zinc -- as well as an ideal blend of the 3 major minerals -- Nitrogen, Phosphate, and Potash.2 1/2-pound bag.