10 Best Tree Fertilizers 2025 in the United States

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.

The GardenWise Professional Citrus Fertilizer is designed specifically for citrus trees such as orange, lime, avocado, and lemon. It offers a balanced N-P-K ratio of 6-4-6, supporting healthy leaf growth, flowering, and fruit quality. This balance is especially beneficial during winter, when steady nourishment helps maintain tree strength and fruit production.

The granules contain important micronutrients including magnesium, zinc, copper, iron, and boron, which contribute to leaf greening, plant defense, metabolism, and fruit development. These nutrients enhance the health and flavor of your fruit. The synthetic fertilizer is granular with a slow-release coating, allowing nutrients to be gradually released with watering. This reduces the need for frequent applications, making it convenient and cost-effective.

Application is straightforward: simply sprinkle around the tree base and water in, making it suitable for both beginners and experienced gardeners. Although tailored specifically for citrus trees, it may not be ideal for other fruit or ornamental trees. This fertilizer offers a well-balanced nutrition solution for those aiming to improve the health and yield of their citrus trees with minimal effort.

The BioAdvanced 12 Month Tree and Shrub Protect and Feed is a slow-release, synthetic fertilizer combined with an insect killer that targets common pests like Japanese Beetles and Aphids. Its main highlight is the convenience of a single application lasting up to a year, making the maintenance of tree and shrub health easier without frequent treatments. The granular form is easy to apply and works systemically, protecting plants from roots to leaves.

This fertilizer is synthetic, so it may not appeal to users looking for organic options. Its strong pest control benefits combined with year-long feeding make it suitable for gardeners wanting low-maintenance care for outdoor and containerized trees and shrubs. Those who prefer organic fertilizers or need precise nutrient management might want to consider alternatives.