Systemic insecticides offer a powerful way to protect both outdoor and indoor plants from scale and other sap-sucking pests. By absorbing through the roots and circulating within the plant, they attack pests that feed on the plant’s tissues. This article reviews five widely available options, highlighting how they work, where to use them, and key considerations for choosing the right product for your garden or houseplants.
Summary of Selected Products
| Product | Brand | Use | Notes |
|---|---|---|---|
| Insect Control Systemic Granules | Bonide | ||
| Systemic Houseplant Insect Control | Bonide | ||
| Systemic Insect Control (Concentrate) | Bonide | ||
| Tree & Shrub Drench | Ferti-Lome | ||
| Safari 20SG Insecticide | Valent Usa Corp |
Bonide Insect Control Systemic Granules For Outdoor Plants
Bonide’s Systemic Granules are a low-odor, ready-to-use solution designed for outdoor plants. The granules are absorbed by the roots and circulate through the plant to guard against listed insects, including scale. Protection can last up to eight weeks after application and is formulated to resist wash-off by watering. This product targets insects that feed on plant tissue, delivering ingestion-based kill while preserving non-feeding insects.
Bonide Systemic Houseplant Insect Control Granules
Designed for containerized plants, these Bonide systemic granules are a low-odor, ready-to-use solution for interior and exterior applications. The product is absorbed through the roots and moves systemically, providing protection for up to eight weeks. It effectively targets insects such as mealybugs, aphids, and scale, including pests that feed on leaves and stems, while minimizing impact on non-target organisms.
Bonide Systemic Insect Control Concentrate
This Bonide concentrate is designed to control hard-to-kill insects in lawns and gardens. It treats a range of listed insects, including thrips, mealybugs, scale, and spider mites. The fast-acting formula is intended for outdoor residential use, with the systemic approach enabling movement through the root zone for broader protection. Use requires dilution and appropriate application according to label directions.
Ferti-Lome Tree & Shrub Drench
Ferti-Lome Tree & Shrub Drench is a systemic formula designed for outdoor use on trees and shrubs. It provides protection for up to 12 months by moving through the root zone. The product targets a range of insects, including aphids and psyllids, with labeling indicating broad systemic protection for landscape plants and ornamentals. Always follow label directions for dilution rates and application timing.
Valent Safari 20SG Systemic Insecticide
Safari 20SG is a systemic insecticide from Valent that targets a wide range of pests, including adelgids, aphids, scales, mealybugs, and more. This dinotefuran-based formulation offers systemic movement within treated plants via root uptake and is suitable for use on certain trees and shrubs. The label lists specific pests and application rates, making it suitable for integrated pest management plans.
Buying Guide: Key Considerations For Systemic Insecticides
- Target pests: Confirm that the product lists scale as a treated pest and that the pest species you’re dealing with are covered on the label.
- Plant type and location: Choose indoor houseplant formulations for indoor use, and outdoor formulations for gardens, lawns, and trees. Some products are designed specifically for containers.
- Absorption and translocation: Systemic products rely on root uptake. Ensure proper application timing in relation to irrigation and rainfall to optimize movement within the plant.
- Duration of protection: Check how long protection lasts—ranging from several weeks to months—and plan reapplications accordingly, considering plant growth cycles and seasonal pest pressure.
- Resistance and rotation: To reduce the risk of pest resistance, rotate among different systemic chemistries when treating persistent infestations, and follow label directions for any restricted-use guidelines.
- Environmental considerations: Some systemic insecticides can impact non-target organisms. Use targeted applications and avoid spraying blooms when pollinators are active if permitted by label.
- Safety and pre-application prep: Wear protective gear, follow mixing instructions for concentrates, and water in products as required by the label to prevent runoff and ensure even distribution.
- Combination with cultural controls: Integrate systemic treatments with pruning, improving plant vigor, and regular monitoring for a holistic pest management approach.
When selecting a systemic insecticide for scale, consider whether you need indoor or outdoor coverage, the longevity of protection, and how the product moves from roots to shoots. For houseplants, a ready-to-use granular or liquid formulation with a labeled indoor-use instruction is ideal, while outdoor landscapes may benefit from concentrated products that provide longer protection across a season. Always consult the product label to verify pest lists, application methods, and safety considerations for your specific plants and environment.