Grow Organic Monterey B.t.
Best organic solution for gardeners managing caterpillar and worm infestations.
This biological spray is the gold standard for stopping caterpillars without nuking your garden’s ecosystem. It trades the broad-spectrum destruction of synthetic pesticides for a targeted, non-toxic approach that keeps your harvest safe and your beneficial insects thriving.
$16.99
at
SeedTime (retailer)
Who it's for
- Gardeners protecting beneficial pollinators and ladybugs
- Organic growers harvesting edible crops frequently
- Busy gardeners needing fast, mess-free spot treatments
Who should skip it
- Gardeners unable to commit to thorough, direct foliage coverage
- Gardeners battling aphids, mites, or adult beetles
- People seeking a low-maintenance, set-it-and-forget-it pest solution
Performance breakdown
Target Specificity
Highly selective formula spares beneficial pollinators and garden wildlife.
Application Convenience
Ready-to-use spray format eliminates mixing and measuring hassles.
Harvest Safety
Zero-day pre-harvest interval allows for worry-free vegetable consumption.
Pest Control Speed
Stops caterpillar feeding damage almost immediately upon ingestion.
Environmental Impact
Biological active agent breaks down naturally without leaving chemical residues.
Treatment Versatility
Specialized for caterpillars, but ineffective against broader garden pest infestations.
Key Specs
Formulation
Ready to Use Liquid Spray
Active Agent
Bacillus thuringiensis (Bt)
Container Size
1 Quart (32 oz)
Pest Target
Worms and Caterpillars (Larvae stage)
Application Method
Spray foliage
Pre-Harvest Interval (PHI)
Up to the day of harvest
Organic
Yes
Pet Safe
No
Child Safe
No
Rain Resistant
No
Know before you buy
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