Monterey Garden B.t.
Best organic solution for gardeners protecting edible crops from caterpillar damage.
Monterey Garden B.t. is a biological insecticide that targets caterpillars, stopping their feeding immediately. This OMRI Listed product is safe for beneficial insects, wildlife, and edible plants, allowing use right up to harvest. Approved for fruits, vegetables, ornamentals, and shade trees, it offers a targeted pest control solution for organic gardening. Its biological agent ensures selective pest management without harming the garden's ecosystem.
$24.99
Owner Satisfaction
4.6
/ 5
Category Rank
355
/ 1667
#355 in Pesticides
Price vs Category Average
-44%
Below average
Pesticide Type
..
/ Biological (Bt)
Who it's for
- Eco-conscious gardeners protecting pollinators and beneficial insects
- Organic growers maintaining chemical-free edible gardens
- Home vegetable growers needing immediate harvest flexibility
Who should skip it
- Gardeners unable to monitor plants for early pest activity
- Busy growers seeking low-maintenance, long-lasting pest protection
- Gardeners dealing with diverse infestations beyond just caterpillars
Performance breakdown
Organic Compliance
OMRI listing ensures full compatibility with strict organic gardening standards.
Target Specificity
Biological action selectively eliminates caterpillars while sparing beneficial garden insects.
Harvest Safety
Zero-day pre-harvest interval allows for worry-free application on edible crops.
Feeding Cessation Speed
Rapidly halts caterpillar damage to protect foliage immediately upon ingestion.
Weather Resilience
Formula lacks rain resistance, requiring reapplication after wet weather events.
Application Versatility
Concentrate format adapts easily to various garden sizes and plant types.
Key Specs
Pesticide Type
Biological (B.t.)
Formulation Type
B.t. (Bacillus thuringiensis)
Active Ingredient
Spinosad
Target Life Stage
Larvae
Container Size
1 Pint
Net Weight or Volume
1 Pint
Organic Certification
OMRI Listed
Pre Harvest Interval (PHI)
Up to day of harvest
Features
- Selectively kills caterpillars
- Caterpillars stop feeding immediately
- Safe for use up to harvest
- Approved for fruits and vegetables
- Safe for beneficial insects
- OMRI Listed for organic gardening
- Biological pest control
- Targets caterpillar-type insects
What customers say
Monterey Garden B.t. is a top choice for organic gardeners seeking effective caterpillar and looper control. Users consistently report its reliability, appreciating that it targets pests without harming beneficial insects. The product is also praised for its straightforward application, mixing easily for convenient use. A little goes a long way, offering significant coverage and making it an excellent value for essential garden management. It delivers dependable, quality performance that gardeners trust for their plants.
Know before you buy
No, it is a selective biological insecticide specifically formulated to target caterpillar-type larvae. It will not harm beneficial insects like bees or ladybugs when used as directed.
You can harvest your fruits and vegetables the same day you apply the product. There is no waiting period required between application and harvest.
No, this product is not labeled as pet or child safe. You should keep people and pets out of the treated area until the spray has completely dried.
This formula is not rain-resistant. If it rains soon after you have applied the product, you will likely need to reapply it to ensure continued effectiveness.
Yes, Monterey Garden B.t. is approved for use on ornamentals and shade trees, in addition to fruits and vegetables, to control caterpillar infestations.
The biological agent in the product targets the digestive system of the larvae. Once ingested, the caterpillars stop feeding immediately, which prevents further damage to your plants.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$25