Spinosad sprays offer an effective, OMRI-listed option for controlling a wide range of garden pests without harsh chemicals. This guide highlights five reliable spinosad-based products and helps you choose the right formulation for your outdoor plants, trees, and vegetables. Each entry includes key features, usage notes, and practical considerations for organic and conventional gardens alike.
| Product | Brand | Size / Form | Key Benefit |
|---|---|---|---|
| Monterey Spinosad Insecticide (8 oz) Concentrate | Monterey | 8 oz concentrate | Broad-spectrum, OMRI Listed |
| Monterey Spinosad Insecticide (32 oz) Concentrate | Monterey | 32 oz concentrate | Larger lawn and garden coverage |
| Fertilome Spinosad Insecticide (32 oz) Ready to Spray | ferti-lome | 32 oz RTU | Ready-to-use convenience |
| Fertilome Spinosad Soap Insecticide (32 oz) Ready to Spray | ferti-lome | 32 oz RTU | Potassium salts / fatty acids combo |
| Monterey Garden Insect Spray (16 oz) Concentrate | Monterey | 16 oz concentrate | Versatile outdoor use |
Note: All products listed are designed to control a broad range of caterpillars, leafminers, borers, tent caterpillars, thrips, and other common pests. Each entry includes OMRI listing or equivalent organic credentials where applicable, making them suitable for organic gardens when used as directed.
Monterey Spinosad Insecticide 8 oz Concentrate
- Controls caterpillars, leafminers, codling moths, tent caterpillars, gypsy moths, thrips, borers, fire ants, and more.
- Suitable for outdoor ornamentals, lawns, vegetables, and fruit trees; OMRI Listed for Organic Gardening.
- Made with Spinosad, a naturally occurring bacteria-based active ingredient.
Monterey Spinosad Insecticide 32 oz Concentrate
- Broad-spectrum insect control including caterpillars, leafminers, and thrips.
- OMRI Listed for Organic Gardening; suitable for organic operations when used per label.
- Formulated with Spinosad for effective, targeted pest management.
Fertilome Spinosad Insecticide Ready To Spray (32 oz)
- Controls a variety of insects including leafminers, borers, leaf rollers, thrips, worms, and more.
- Outdoor use for vegetables, trees, shrubs, flowers, fruits, and citrus.
- Available in concentrate and immediately Ready To Spray formats.
Fertilome Spinosad Soap Insecticide Ready To Spray (32 oz)
- Designed to control adelgids, aphids, leafhoppers, armyworms, beetles, caterpillars, and more.
- Outdoor use for vegetables, trees, shrubs, flowers, fruits, and citrus; suitable for gardens, lawns, and greenhouses.
- Formulation includes potassium salts of fatty acids with Spinosad as an active ingredient.
Monterey Spinosad Insecticide Bundled with Measuring Spoon – Organic Gardening
- Broad-range pest control suitable for outdoor ornamentals, lawns, and edibles.
- OMRI Listed for Organic Gardening; ready to mix with measuring spoon for precise application.
- Contains Spinosad to target listed insects effectively while remaining safer for beneficials when used as directed.
Monterey Garden Insect Spray Bundled with Measuring Spoon – Pint Concentrate
- Fast-acting and odorless formulation based on Spinosad.
- Controls many insects including caterpillars, leafminers, codling moths, and thrips.
- OMRI Listed for Organic Gardening, suitable for organic and conventional gardens alike.
Monterey Garden Insect Spray – Hose-End Ready to Spray
- Ready-to-spray formula for convenient home garden use.
- Targets a broad range of pests including caterpillars, thrips, leafminers, and more.
- Contains Spinosad for effective pest control with OMRI-listed organic compatibility when used per label.
Buying Guide: Key Purchase Considerations And Comparisons
When selecting a spinosad spray for plants, consider pest targets, application method, garden size, and organic compatibility. Spinosad is most effective against chewing and leaf-feeding insects but may have limited impact on some sap-sucking pests unless used as part of an integrated approach.
- Formulation and readiness: Ready-to-spray (RTU) products offer quick, convenient use for small gardens, while concentrates are ideal for larger areas and cost efficiency.
- OMRI and organic compatibility: If you garden organically or follow NOP guidelines, verify OMRI listing and read the label for approved uses and restrictions.
- Target pests: Check the pest list on the label to ensure the intended insects are covered. Spinosad is particularly effective against caterpillars, leafminers, borers, and thrips.
- Plant safety and pre-harvest intervals: Always test on a small leaf area first and observe any phytotoxicity on sensitive varieties. Note any required wait times before harvest if applicable.
- Application timing and frequency: For many pests, timely applications aligned with pest life cycles yield the best results. Avoid spray days with high rain risk to prevent wash-off.
- Compatibility with beneficials: Spinosad is relatively selective but can affect some beneficial insects if misapplied. Follow label directions to minimize impact on pollinators and natural enemies.
- Storage and handling: Keep containers sealed, store in a cool, dry place, and avoid exposure to extreme temperatures to preserve efficacy.
Choosing between concentrates and RTU formulations largely depends on garden size, budget, and preferred workflow. Concentrates extend coverage per bottle, while RTU options simplify immediate use with less equipment. For organic operations, ensure the product is OMRI-listed and used strictly per label directions to maintain organic status.