10 Best Rose Fertilizers 2026 in the United States

Miracle-Gro Shake 'N Feed Rose & Bloom Plant Food is designed to support roses and other flowering plants by promoting more blooms and vibrant color. It contains natural ingredients that help improve soil health, which is beneficial for those who prefer products with organic qualities, although it is technically a synthetic blend rather than fully organic. One of its standout features is the slow-release formula that feeds plants for up to three months, reducing how often you need to apply fertilizer. This convenience helps take the guesswork out of feeding schedules, making it user-friendly for gardeners of all experience levels.

The granule form is easy to apply whether your roses are in the ground or containers. This fertilizer is suitable for those who want a reliable, low-maintenance feeding option that promotes blooming and healthy growth without complicated application steps.

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.

Neptune's Harvest Rose & Flowering Formula offers a liquid fertilizer with an N-P-K ratio of 2-6-4, which means it has higher phosphorus and potassium levels compared to nitrogen. This is good for encouraging strong blooms and healthy root development in roses. Being made from fish-based ingredients, it is an organic option, which is beneficial if you prefer natural fertilizers that improve soil health over time. It also contains micronutrients that support overall plant vitality.

The liquid form allows for easy mixing and application, making it convenient for regular feeding, which is recommended every two to four weeks during the growing season. One downside is the relatively low nitrogen level, so if your roses need more leafy growth alongside flowering, you might need an additional nitrogen source. Also, as a liquid fertilizer, it requires more frequent applications than slow-release granules, which might be less convenient for some users.

This product suits gardeners looking for an organic, bloom-focused fertilizer to keep their roses healthy and flowering abundantly, especially those comfortable with a liquid feeding routine.