4 Best Sweet Corn Fertilizer 2025 in the United States

The Andersons Dirt Booster Plus is an all-natural compost starter and soil amendment designed to rapidly enhance soil quality. It excels at boosting microbial activity, fostering good bacteria and fungi, and enriching soil within a short span of 7 to 12 days. The product is organic and features essential components like biochar, humic acid, and molasses, making it environmentally friendly and beneficial for long-term soil health.

However, it is noted that the compost should not be planted in directly due to its high nutrient content, which could potentially burn plants. This means users need to mix it into existing soil, adding an extra step to the process. Additionally, it is versatile and can be used for lawns as well, but it's not available for sale in California.

For those looking for a quick-release, organic solution that enhances soil health and microbial activity, Dirt Booster Plus is a good option. However, its necessity to blend it with existing soil may require careful consideration for precise sweet-corn fertilization needs.

The Bloom City Organic Wild Fish Fertilizer is a liquid fertilizer derived from sustainable Alaskan salmon, making it a great eco-friendly option for fertilizing sweet corn. One of its main strengths is that it is organic, which is beneficial for maintaining healthy soil and promoting sustainable gardening practices.

The inclusion of salmon emulsion and oil provides essential omega-3 fatty acids and amino acids, which can help boost plant health and vigor. Additionally, it is formulated by botanists and plant chemists in the USA, ensuring high quality and potent ingredients.

The liquid form makes it easy to apply, and its coverage of 128 fluid ounces should last for multiple applications, depending on the size of your garden or farm. However, the product's strong fish smell might be off-putting for some users, especially if used in indoor settings. Despite this drawback, this fertilizer is a good choice for conscientious growers who prioritize sustainability and organic gardening.

The Urea Fertilizer 46-0-0 by Cz Garden Supply is a high nitrogen fertilizer that is particularly good at promoting green, leafy growth in a variety of plants, including sweet corn. With an NPK ratio of 46-0-0, it's heavily skewed towards nitrogen, which is ideal for leafy growth but lacks phosphorus and potassium essential for fruit and root development. This makes it less balanced compared to fertilizers that meet all stages of plant growth.

Being a quick-release synthetic fertilizer, it offers immediate nutrient availability, resulting in rapid effects but may need more frequent applications. It is water-soluble, which facilitates easy absorption by plants, but this also means it's susceptible to leaching, which can be inefficient and possibly harmful to the environment if not managed correctly.

The product is versatile and can be used for a wide range of plants including vegetables, fruits, and lawns, and even for non-agricultural uses like tie-dye projects. The resealable packaging is practical for storage and ease of use. However, the lack of micronutrients and incompatibility with adjusting soil pH might be a concern for growers looking for a more comprehensive soil amendment. This product would be most suitable for users who need a strong nitrogen boost for their plants and are looking for quick results, but it might not be the best choice for those needing a more balanced nutrient profile or long-term soil health.