10 Best Flower Fertilizer 2026 in the United States

The Miracle-Gro Water Soluble All Purpose Plant Food is a versatile flower fertilizer suitable for a variety of plants including flowers, vegetables, trees, and houseplants. One of its main strengths is its NPK ratio, which is designed to provide essential nutrients quickly, resulting in bigger and more vibrant plants. The water-soluble nature of this fertilizer makes it easy to apply using a watering can or the Miracle-Gro Garden Feeder, which can be convenient for both indoor and outdoor gardening.

Additionally, the product claims to be safe for all plants and guarantees no burning when used as directed, which can be reassuring for novice gardeners worried about damaging their plants. A key benefit is the frequency of application - feeding every 1-2 weeks ensures steady nutrient supply without overwhelming the gardener with constant maintenance. However, it's worth noting that this product is synthetic, which might not appeal to those looking for an organic option. It also does not specifically highlight the inclusion of micronutrients, which are essential for the complete development of plants.

Despite these drawbacks, this product is likely to be most beneficial for gardeners seeking a reliable, easy-to-use fertilizer that delivers quick and noticeable results.

The FoxFarm Fertilizer Soil Trio includes three liquid fertilizers—Grow Big, Big Bloom, and Tiger Bloom—that together support different growth stages of flowering plants. Grow Big encourages healthy leaf and stem development, Big Bloom is an organic-friendly formula that can be used with every watering to nourish plants, and Tiger Bloom boosts phosphorus and nitrogen to promote abundant flowers and fruit. This combination of fertilizers is convenient because it covers the full cycle of plant growth, from vegetative to flowering stages.

The trio is liquid-based, making it easy to apply and absorb. Big Bloom is certified organic, which is great if you prefer natural fertilizers, while the other two are synthetic blends with targeted nutrients. Tiger Bloom typically has higher phosphorus for flowers, and Grow Big leans toward nitrogen for leafy growth, which suits flowering plants well. Big Bloom can be applied every time you water, offering flexible feeding without risking nutrient buildup, which is helpful for beginner gardeners.

Since this is a trio pack, you’ll need to switch between products based on your plants’ growth stage, which might require some learning or following the included conversion chart. This fertilizer set is a reliable choice for gardeners looking to boost their flower and fruit production and works best for those growing flowers or fruiting plants at home who want a balanced, easy-to-use, and partially organic nutrient solution.

FoxFarm Big Bloom is a liquid fertilizer designed mainly for flowering plants, fruits, and vegetables, making it suitable for both indoor and outdoor gardening. Its NPK ratio is very low in nitrogen (0) and phosphorus (0.5) but slightly higher in potassium (0.7), which aligns with its focus on promoting blooms and fruit development rather than leafy growth.

As an organic fertilizer, it features natural ingredients like earthworm castings and bat guano, providing a range of micronutrients that support healthy root systems and enhance flower fragrance and flavor in herbs and vegetables. This organic base makes it an excellent choice for gardeners looking to avoid synthetic chemicals. The fertilizer is easy to use, simply mixed with water and applied during regular watering. Because of its mild nutrient content, it can be safely used frequently without the risk of over-fertilizing.

Due to the low NPK values, it is not suitable as a complete fertilizer and should be part of a broader feeding plan that includes nitrogen sources for overall plant health. While it’s great for blooming and flavor, gardeners seeking fast or heavy feeding might find it less potent than synthetic options. FoxFarm Big Bloom is a gentle, organic liquid fertilizer ideal for enhancing flower and fruit quality, especially for hobbyists and those growing edible plants in pots or garden beds.