10 Best Tree Fertilizers 2026 in the United States

Farmer's Secret Fruit Tree Booster Fertilizer is specifically crafted for fruit trees, offering a super concentrated formula that emphasizes phosphorus, a crucial element for early growth and fruit development. Its application is straightforward—mixing a small amount with water—making it convenient for both amateur and experienced gardeners. Its concentrated nature means that a little product goes a long way, which is efficient for those with numerous trees or large orchards.

The fertilizer is suitable for a variety of fruit trees, including peach, banana, and apple, and is ideal for use from the end of dormancy to the budding phase, ensuring vital nutrition during these critical periods. One of its strengths is the tailored application frequency, recommending different amounts for young versus mature trees. This flexibility helps cater to different growth stages and tree needs, which can optimize tree health and fruit yield.

Produced and bottled in Kentucky, the fertilizer reflects a commitment to quality that is backed by scientific development processes commonly accessible to professional farmers. For users looking for a robust fertilizer that supports fruit tree growth efficiently, Farmer's Secret provides a significant advantage in terms of concentrated formula and ease of use.

This 10-10-10 slow-release granular fertilizer offers a balanced mix of nitrogen, phosphorus, and potassium, making it a versatile choice for a variety of trees like fruit trees, evergreens, oaks, and shrubs. Its slow-release formula feeds plants steadily for up to eight weeks, reducing how often you need to apply it—usually twice per growing season for gardens and three times annually for trees and shrubs. This can save effort while supporting healthy root development, vibrant leaves, and overall plant resilience.

The fertilizer granules are easy to spread evenly across outdoor soil, which helps ensure good nutrient absorption. It also contains quick-release nitrogen for a fast growth boost alongside the slow feeding effect. One downside is it’s a synthetic product, so if you prefer organic options, this wouldn’t fit that preference. The 10-10-10 ratio is well-rounded but may not be ideal if your trees need targeted nutrients at certain growth stages.

This fertilizer performs well for general tree and garden feeding with minimal fuss, especially if you want a balanced nutrient supply and less frequent application. However, organic gardeners or those needing special soil adjustments might want to look for products with added micronutrients or pH-specific formulations.

The BioAdvanced 12 Month Tree and Shrub Fertilizer is a slow-release, granule-based product designed to nourish trees and shrubs while protecting them from a range of common insect pests like Japanese Beetles and Aphids. It provides a year-long feeding and insect control with just one application, which is ideal for users seeking low-maintenance care.

This product uses a synthetic active ingredient (Imidacloprid) for pest control, making it more targeted against insects but less suitable for those looking strictly for organic options. It’s designed for use on both outdoor and container plants and is likely best suited for standard garden soils.

The combination of fertilizer and insecticide in one granule simplifies application, although it may not fit gardeners who prefer to treat nutrients and pests separately. It offers a convenient solution to feed and protect trees and shrubs with minimal effort, especially when insect problems are a concern.