Protecting trees and shrubs from harmful pests requires targeted, long-lasting solutions. This guide reviews top products that move through root systems, kill common invaders, and safeguard new growth. Each option below is formulated to treat outdoor trees and shrubs, with different application methods to fit your yard, climate, and maintenance routine.
Summary table of selected products:
| Product | Brand | Form | Key Benefit |
|---|---|---|---|
| Bonide Annual Tree & Shrub Insect Control with Systemaxx (128 oz) | Bonide | Concentrate | Systemaxx root-and-shoot protection for year-long control |
| BioAdvanced Tree & Shrub Insect Killer (32 oz) | BioAdvanced | Ready-to-Spray | Fast-acting, long-lasting outdoor insect control |
| Monterey Once A Year Insect Control II (1 Quart) | Monterey | Concentrate in water | Year-long systemic protection through root uptake |
| Spectracide Triazicide Insect Killer For Lawns & Landscapes (32 oz) | Spectracide | Concentrate | Broad-spectrum, rapid kill above and below ground |
| Organic Insecticide For Lawns, Trees & Shrubs – 16 oz | ARBER | Ready-to-Spray hose-end | Bee-safe and odorless with natural bio-insecticide action |
Bonide Annual Tree & Shrub Insect Control (128 oz)
Bonide’s Annual Tree & Shrub Insect Control with Systemaxx provides year-long protection by moving through the root zone and into the plant’s vascular system. The concentrate is designed for use on listed fruit, nut and ornamental trees and shrubs, including roses and stone fruits. It targets borers, miners and other common pests, and supports new growth as it travels upward from the roots.
Bonide Annual Tree & Shrub Insect Control (32 oz)
This 32-ounce Bonide formulation leverages Systemaxx technology to move the active ingredient through the soil to the root zone, then up into the tree or shrub. It provides long-lasting protection against a range of pests and is suited for established ornamental trees and fruit trees, helping safeguard new growth throughout the season.
Monterey Once A Year Insect Control II (1 Quart)
Monterey’s Once A Year Insect Control II is a systemic insecticide designed to be absorbed by plant roots and provide year-long protection for trees and shrubs, including several fruit and nut varieties. It targets pests like adelgids, aphids, scale and borers, and helps protect new growth from damage while offering ease of annual maintenance.
BioAdvanced Tree & Shrub Insect Killer (32 oz)
BioAdvanced Tree & Shrub Insect Killer offers a ready-to-use spray that protects against common yard pests. The product emphasizes fast-action control and a long-lasting formula that continues to defend trees and shrubs from listed insects for up to two weeks per treatment, supporting ongoing yard health with straightforward application.
Pro Grub Control – 32oz (Imidacloprid 21.4%)
Pro Grub Control by Liquid Harvest delivers 21.4% Imidacloprid in a concentrated form for trees, shrubs and landscape ornamentals. It can be applied to turf, as a foliar spray, or to soil, providing targeted insect control on a systemic basis to protect root zones and foliage.
Spectracide Triazicide Insect Killer For Lawns & Landscapes (32 oz)
Spectracide Triazicide provides a fast-acting broad spectrum solution for lawns, fruit and nut trees, roses, flowers and shrubs. Its 260+ insects by contact coverage includes grubs, ants and beetles, with non-staining properties that help preserve the appearance of exterior surfaces when used as directed.
Organic Insecticide For Lawns, Trees & Shrubs (16 oz)
ARBER’s Organic Insecticide uses a bio-insecticide approach powered by beneficial bacteria. It is designed to be odorless, non-staining and bee-friendly, suitable for lawns, trees, shrubs and garden beds, with a focus on targeted pest suppression while minimizing impact on pollinators.
Buying Guide: Key Purchase Considerations For Tree And Shrub Pest Control
- Mode of action: Systemic vs. contact sprays. Systemic products move through roots to protect new growth, while contact sprays act on contact and often provide quicker knock-down for visible infestations.
- Target pests: Identify whether you’re dealing with aphids, borers, scale, grubs or leafhoppers. Some products cover a broad range, while others target specific pests.
- Application method and frequency: Systemic concentrates may require mixing and seasonal timing; ready-to-spray formulas offer convenience but may require more frequent applications in hotspots.
- Plant compatibility: Check labels for fruit, nut, or ornamental trees and shrubs to ensure compatibility with your species and avoid phytotoxicity.
- Environmental and pollinator considerations: Bee-safe formulas and odorless options can reduce impact on beneficial insects; avoid drift toward flowering plants during bloom.
- Long-term protection: Consider products that provide year-long protection or multiple-week intervals to minimize maintenance work.
- Safety and storage: Follow label directions, store out of reach of children and pets, and use protective gear as recommended.
- Cost and coverage: Larger volumes may offer better value for bigger landscapes, but consider how often you’ll treat and the area covered.