If you have a few plants in your garden that are languishing, a shot of 19-19-19 will help perk them up. If you garden in the same plot of ground every year (and most people do just that), the soil’s stores of primary nutrients can get depleted over time. In a pinch, it will also serve to fertilize lawns. It works best for trees, shrubs, vegetable gardens and houseplants. Instead of being a targeted formula that only works for certain plants, 19-19-19 fertilizer is a workhorse that’s effective for many uses in your home landscape. Or you can get your job done with a single bag of 19-19-19 whereas you may need two bags of 10-10-10. If you’re worried that 19-19-19 is too high of a dose for your plant, you can simply apply it at half the rate recommended on the bag.īy doing this, a bag of Triple 19 can go twice as far as a bag of Triple 10 for the same price. There are a few strong reasons to choose Triple 19: Cost Per PoundĪt any garden supply store, you’ll be able to find similarly sized and priced bags of Triple 10 and Triple 19 fertilizer.īut a bag of 19-19-19 contains nearly double the amount of nutrients per pound than 10-10-10, so your cost per pound of nutrients is basically halved. Of all the many (many!!) options out there, what’s so great about 19-19-19 fertilizer? However, formulas like 10-10-10 and 12-12-12 contain a lower concentration of nutrients than 19-19-19. So they provide balanced nutrition and are ideal for multiple uses, like 19-19-19. Triple 19 isn’t the only balanced fertilizer out there. This means that 19-19-19 fertilizer provides ideal nutrition for many types of plants, much the same way that you aim to eat balanced meals that supply a variety of nutrients. Since Triple 19 provides equal parts of nitrogen, phosphorus and potassium, it has a 1-1-1 ratio and is a balanced formula. A 20-pound bag of 19-19-19 fertilizer contains 3.8 pounds each of nitrogen, phosphorus and potassium.A 50-pound bag of 19-19-19 fertilizer contains 9.5 pounds each of nitrogen, phosphorus and potassium.A 100-pound bag of 19-19-19 fertilizer contains 19 pounds each of nitrogen, phosphorus and potassium.Here’s what that actually means in practical application: (The remaining 43% of inactive ingredients are fillers meant to carry the nutrients or other substances meant to make the fertilizer easier to dissolve, reduce or increase soil pH, etc.) So, a bag of NPK 19 19 19 contains 19% each of nitrogen, phosphorus, and potassium, for a total of 57% active ingredients. The NPK number of any given fertilizer tells you the percentage by weight (ratio) of these three macronutrients in each bag of fertilizer. These three elements are the most important macronutrients required for plants to grow: These numbers stand for the respective amount of nitrogen (N), phosphorus (P), and potassium (K) the fertilizer contains. This ratio is known as the fertilizer analysis or the NPK number. Ratios are important for comparing fertilizers since they indicate the concentration of primary nutrients in a given formula.
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