The nice thing about coated granular fertilizers is that you apply them only once or twice during the growing season and they gradually release nutrients in tiny doses as roots can take them up. They depend on moisture and temperature for release. They are coated to control the rate of release typically from 2 to 9 months, depending on the formula, whereas uncoated (and cheaper) farm grades last only 2 to 4 weeks.
Miracle-Gro® Shake ‘n Feed® Tomato, Fruit & Vegetable Plant Food, have "slow-release," "timed-release," or "controlled-release" properties, synonymous terms meaning that they release their nutrients slowly over a period of time. You may be familiar with common granular farm-grade fertilizers such as 8-8-8 and 10-10-10. It's often good to work them into the ground before planting. Because they must first break down before releasing nutrients, it usually takes a watering and a few days to begin to see their results. They last 1 to 9 months, depending on the type.
These are meant to be worked into the soil or sprinkled around plants. Plants quickly take up most water-soluble fertilizers, while granular fertilizers need a while to dissolve or decompose before plants can access their nutrients. Granular fertilizers are solid granules, while liquid fertilizers are made from water soluble powders or liquid concentrates that mix with water to form a liquid fertilizer solution. What is the difference between granular and liquid fertilizer? Then read below for more about the different forms of fertilizer.
What are the differences among the many forms of fertilizer that you see on shopping aisles? What is a granular fertilizer? What about water-soluble? What are slow-release, timed-release, and controlled-release? What is an organic fertilizer? If you have questions about the numbers on the bag, read What's in a Package of Fertilizer? first.
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