10 Best Flower Fertilizers 2025 in the United States

Jobe’s Organics Granular All Purpose Fertilizer is a solid choice for anyone looking to nourish flowers along with vegetables, shrubs, and trees using an organic product. Its balanced 4-4-4 NPK ratio means it provides equal parts nitrogen, phosphorus, and potassium, which supports healthy leaf growth, strong roots, and vibrant blooms. Being OMRI listed, it contains no synthetic chemicals, making it ideal for gardeners who want to avoid harsh additives and prefer eco-friendly options. The granular form is easy to measure and apply, reducing waste and mess, and it’s recommended to use it every 2-3 weeks throughout the growing season to maintain steady nutrient supply.

The FoxFarm Fertilizer Soil Trio offers a well-rounded solution for gardening enthusiasts, combining Grow Big, Big Bloom, and Tiger Bloom products. One of its main strengths is the inclusion of both nitrogen and phosphorus fertilizers, which are crucial for promoting lush vegetative growth, abundant flowering, and robust fruit development. The NPK ratios are tailored to support various stages of plant growth, making it versatile for all your gardening needs.

FoxFarm Tiger Bloom is a liquid fertilizer designed specifically for flowering plants, with an NPK ratio of 2-8-4 that emphasizes phosphorus to support strong flower and fruit development. It’s a synthetic formula, making it fast-acting and easy to mix into water at a dilution between 1:200 and 1:300. This product contains micronutrients and has a low pH to help keep those nutrients available to plants, which can be important for healthy growth during blooming.