Monterey BT Bacillus Thuringiensis – Organic Caterpillar & Worm Control, 16 oz Bundle with Measuring Spoon

Monterey BT: Organic, Targeted Caterpillar and Worm Control

Meet Monterey BT, a trusted organic pest control designed to address caterpillars and worm-type insects across a broad range of plants. This 16 oz concentrate is bundled with a measuring spoon for convenient, precise mixing, making it easier to integrate into regular garden care. Rather than a broad-spectrum spray, Monterey BT offers a targeted approach that aligns with organic gardening goals while supporting plant health and garden aesthetics.

What it does

Monterey BT uses Bacillus thuringiensis (BT) to act when caterpillars and leaf-feeding larvae chew treated foliage. It can help manage common pests such as cabbage looper, bagworm, gypsy moth, fall cankerworm, elm spanworm, and other similar insects when the product is applied according to label directions.

Designed for versatility, the formula can be used on vegetables, fruits, and ornamentals alike, including broccoli, cabbage, lettuce, tomatoes, melons, and a variety of shade trees and ornamental plants. It is an OMRI-listed option, which supports organic gardening standards under the USDA National Organic Program (NOP).

Key benefits at a glance

• Targeted pest control for caterpillars and worm-type insects on a diverse plant mix
• Foliage protection across vegetables, herbs, fruits, and ornamentals
• Safety for earthworms and bees when used as directed
• OMRI Listed for Organic Gardening, aligning with organic farming and home gardens
• Easy mixing and application with water; suitable for trigger sprays and pressure tank sprayers

Practical uses in a real garden

Whether you’re tending a home vegetable bed or a flowering landscape, Monterey BT provides a practical option for keeping leaf-chewing pests at bay without resorting to harsher chemicals. The included measuring spoon helps you achieve accurate dilutions, supporting consistent results across multiple spray sessions. Expect smoother foliage and improved plant appearance when timing and coverage follow the label guidelines.

How to apply

Mix Monterey BT with clean water as directed, and apply using a trigger spray bottle or a pressure tank sprayer. Cover the affected foliage thoroughly for best contact with feeding larvae. Always read and follow the label directions for mixing rates, timing, and precautions. Reapply as necessary, particularly after rain or heavy irrigation.

Important notes

Monterey BT offers a natural, site-appropriate option for pest management, but outcomes depend on proper timing, coverage, and adherence to directions. This product does not guarantee pest elimination and should be used as part of an integrated approach to garden care. For organic-specific guidance, refer to local extension resources and the OMRI listing details on the label.