10 Best Fertilizers For Roses 2026 in the United States

BioAdvanced All-In-One Rose and Flower Care is a versatile granule fertilizer designed specifically for roses and flowers, offering a combination of plant food, insect killer, and disease control. One of its standout strengths is the multi-functional formula that not only promotes strong roots and beautiful blooms but also provides systemic protection against pests like Japanese Beetles and common rose diseases such as Black Spot and Powdery Mildew for up to 6 weeks. This makes it particularly advantageous for those looking for a comprehensive solution to rose care without needing multiple products.

A clear drawback is that this product is restricted in several states, including CT, CO, MD, MA, ME, NY, and VT, which limits its availability. Another aspect to consider is that it isn't specified as an organic fertilizer, meaning it may not be suitable for gardeners aiming for organic gardening. Additionally, the fertilizer contains synthetic active ingredients such as Imidacloprid and Tebuconazole, which may not appeal to those preferring all-natural products.

Its easy application as granules and the need for re-application only every 6 weeks can be a time-saver. This product is ideal for gardeners looking for an all-in-one solution that simplifies rose care, particularly those who do not mind using synthetic products.

The BioAdvanced 2-In-1 Systemic Rose and Flower Care II is a granule-based fertilizer that seems well-suited for rose enthusiasts looking for both nutrition and pest control. This product promotes strong, beautiful blooms in roses and other flowers by providing essential plant food. It is a synthetic fertilizer, which works effectively for rapid results but may not be ideal for organic gardeners.

An added advantage is its 8-week systemic protection against a variety of pests, including aphids, Japanese beetles, and lace bugs, which can help maintain the health of your plants without frequent reapplication. This rainproof feature ensures the product's longevity even in adverse weather conditions. A significant coverage area, treating up to 80 rose bushes, is beneficial for those with larger gardens.

BioAdvanced's 2-in-1 product is best suited for gardeners looking for a comprehensive, hassle-free solution to both feed their roses and protect them from pests, but it won't meet the needs of those requiring an organic fertilizer or those residing in restricted regions.

Espoma Organic Rose-Tone 4-3-2 Organic Fertilizer is specifically designed for all types of roses and other flowering plants, making it versatile for various gardening needs. The 4-3-2 NPK ratio indicates a balanced nutrient composition that promotes green growth and abundant blooms. One of its strengths is that it's organic, containing natural ingredients enhanced with Bio-tone formula, making it environmentally safe with no toxic ingredients.

The inclusion of 5% calcium is a notable benefit for strengthening plant cell walls and aiding in nutrient uptake. The application frequency is simple—monthly through the growing season, from May to September—which aligns well with the growing cycle of roses and simplifies the user's garden maintenance routine. Additionally, it requires no mixing, making it user-friendly for gardeners of all levels.

Being approved for organic gardening, it meets all the requirements for organic production, appealing to environmentally conscious users. Made in the USA by a reputable company, Espoma, which has been a leader in natural organics since 1929, adds to its reliability. However, the medium coverage might not be sufficient for larger gardens, requiring users to purchase more bags for extensive use. Also, granules may require more attention during application to ensure even distribution. Despite these minor drawbacks, it's a robust choice for those looking for a trusted, organic solution to nourish their roses and flowering plants.