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[Tomato Dirt #205] Compare Tomato Fertilizer: Which One Is Right for You?
June 25, 2020
Tomato Dirt Newsletter
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Tomatoes are heavy feeders. Tomato fertilizer helps supplement your garden soil and provide nutrients that tomato plants need at different stages of growth: nitrogen, phosphorus, potassium, potash, calcium, and magnesium, along with other trace minerals.
Consider composition as you compare tomato fertilizers to make the best choice for your plants and your garden.
Understand the numbers. Most fertilizers are a combination of the three nutrients commonly fed to plants: nitrogen, phosphorus, and potassium (referred to as the “N-P-K ratio”). A fertilizer’s composition is listed on the label in a three-number series, such as 15-10-
5. The three numbers represent those three nutrients. A 15-10-5 fertilizer contains 15% nitrogen, 10% phosphorus, and 5% potassium. The remainder of the fertilizer is filler material.
Know the best nutrient balance for tomatoes. Nitrogen encourages leaf growth, which is why fertilizers with higher ratio of nitrogen (the first of the three numbers) are an optimum choice for lawns and grasses. But in tomatoes, excess leaf growth discourages blossoms and fruit. Phosphorus encourages flowering. Potassium encourages fruiting. So a complete fertilizer with a balanced supply of the three major nutrients, such as 10-10-10 or 5-10-10, is a good choice for tomato plants.
Learn more about different kinds of tomato fertilizers to choose one that’s right for you… and be sure to check out our Fertilizing Tomatoes board on Pinterest for more helpful information.
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Get more tips for growing tomatoes on our Tomato Growing Tips Pinterest board.
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Kathy with Tomato Dirt
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