10 Best Rose Fertilizers 2025 in the United States

BioAdvanced All-In-One Rose and Flower Care is a convenient granule fertilizer designed to support healthy rose plants by promoting strong roots and vibrant blooms. This product doubles as a multi-purpose treatment by combining fertilizer with pest and disease control, making it ideal for those seeking an all-in-one solution without buying multiple products. It contains synthetic active ingredients like Imidacloprid and Tebuconazole that target common rose pests such as Japanese Beetles and Aphids, as well as fungal issues like Black Spot and Powdery Mildew.

The systemic and rainproof formula lasts up to six weeks, reducing the need for frequent applications. However, if you prefer purely organic fertilizers or want precise control over nutrient ratios, this might not be the best fit. Additionally, the product is restricted in several states, so availability could be limited depending on your location.

This product is well suited for gardeners seeking a straightforward, combined fertilizer and pest/disease treatment, especially if managing pest problems alongside feeding roses is a priority.

The BioAdvanced All-In-One Rose and Flower Care is a well-rounded choice for those looking to enhance their rose plants' health with minimal effort. Priced for convenience, this granule-based fertilizing product also serves as an insect killer and fungicide, making it a three-in-one solution. It works by promoting strong roots and vibrant blooms thanks to its effective formulation. The fertilizer is synthetic, which ensures a quick uptake of nutrients by the plants but may not be suitable for those specifically seeking organic alternatives.

The product also controls pests like Japanese Beetles, Aphids, and Leafhoppers, and combats diseases such as Black Spot and Powdery Mildew with its fungicidal properties. One notable advantage is its rainproof protection that lasts up to six weeks, reducing the need for frequent reapplication. However, the restriction in New York might be a limitation for some users.

The granule form makes it easy to apply, and it can be used for both indoor and outdoor plants, adding to its versatility. The product size is manageable (4 pounds) and should cover a reasonable number of plants. It's a strong choice for gardeners looking for an all-in-one rose care solution, especially those dealing with pest and disease issues, though it may not meet the needs of organic gardeners.

Great Big Roses Soil and Rose Fertilizer Booster is a liquid concentrate designed to improve soil and boost the effectiveness of your existing rose fertilizers. It works by enhancing soil structure and increasing nutrient availability right at the roots, helping roses absorb fertilizer more efficiently. This product contains a blend of compost extract, humic acids, chelated trace minerals, and seaweed, providing useful micronutrients beyond standard N-P-K values.

One of its standout features is that it is USDA organic certified, making it a good choice if you prefer environmentally friendly and natural gardening products. It’s easy to use—just dilute four ounces in a gallon of water and apply around the base of your plants without digging. This makes it convenient for gardeners who want to improve soil health without much hassle.

Since it is a booster and compost extract rather than a complete fertilizer, it may not supply all the nitrogen, phosphorus, and potassium your roses need on its own. You will likely need to combine it with a balanced rose fertilizer to cover all nutrient needs. This product suits rose enthusiasts aiming to enrich their soil naturally and enhance fertilizer performance, especially those who value organic inputs. If you're looking for a full N-P-K fertilizer or need specific nutrient ratios, you might want to complement this booster with a traditional rose fertilizer.