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Guarda - Botanical Fungicide, Bactericide
Powered by HOLDit® Technology
Guarda® is the first EPA-registered, bactericide/fungicide with botanical thyme oil as the active ingredient. Take advantage of up to 14 days of residual activity and say Cu-later to heavy metals.
Why use Guarda?
- No use restrictions
- Low risk of resistance: ideal for IPM programs
- MRL/tolerance exempt
- 0-hour REI; zero-day PHI
- Extended performance up to 14 days
- Tank-mix compatible with most agrichemicals
Active Ingredients
- Thyme oil
Mode of Action
Guarda combats plant pathogens and provides continued defense through cellular damage and inhibition of these organisms. It is the first EPA-registered crop protection tool with thyme oil as the registered active ingredient, and it is formulated like no other, as the thyme oil is standardized by its active content, thymol. Guarda’s mode of action is cell wall destruction, telomerase inhibition, and cell membrane damage leading to loss of cytoplasmic content and ergosterol depletion.
The HOLDit® Advantage
The HOLDit Technology in Guarda captures the active ingredient, thyme oil, and allows it to remain active over a period of time extending performance against plant pathogenic organisms.
Without HOLDit, thyme oil is rendered inefficient because the active ingredient thymol volatilizes in the environment, never allowing for correct contact time to destroy microorganisms. This plant-based inert is tolerance exempt and approved for use without restrictions.
Guaranteed Analysis
Active Ingredients:
Thyme oil.............................................................................3.00%
OTHER INGREDIENTS:..................................................97.00%
TOTAL:................................................................................. 100.00%
Where Guarda Fits in a CEA IPM Program
Guarda fills the residual coverage gap in BioSafe's PAA-based program. ZeroTol 2.0 delivers immediate contact kill with zero residual activity - by design, PAA breaks down quickly to oxygen and water. Guarda's HOLDit Technology gives the thyme oil active ingredient up to 14 days of residual activity on treated surfaces. Rotating ZeroTol 2.0 and Guarda keeps pathogen populations from adapting to a single mode of action while maintaining continuous coverage through the interval between ZeroTol applications.
The 0-hour REI and zero-day PHI make Guarda one of the most worker-friendly fungicides on the market - no restricted entry period means you can apply and return to work immediately. Tank mix compatible with most agrichemicals and suitable for use throughout the crop cycle without calendar restrictions or use limits.
Frequently Used Together
- BioSafe ZeroTol 2.0 - rotation partner for contact-kill phase
- BioSafe OxiPhos - systemic ISR tank mix for full-program disease management
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| Brand | BioSafe |
|---|---|
| SKU | 4300-2.5 |
| Weight (lb.) | 24.0100 |
| Width (in.) | |
| Prop 65 | false |
| Height (in.) | |
| Length (in.) | |
| Hazardous Material | false |
| Lead Time | 2-3 |
| ETL Listed | No |
| UL Listed | No |
| Application Type | ["Liquid"] |
| Product Type | Fungicide |
| OMRI Certified | No |
| Usage Area | Indoor & Outdoor |
| Concentration | Ready-to-Use |
| Ingredient Base | Organic Based |
What makes Guarda different from other botanical fungicides?
Guarda uses thyme oil as its EPA-registered active ingredient with BioSafe's proprietary HOLDit technology, which binds the thyme oil to plant surfaces for up to 14 days of residual activity per application. Most botanical or contact fungicides have little to no residual - Guarda's 14-day window is comparable to conventional synthetic fungicides without the restrictions. Zero-hour REI and 0-day PHI mean no downtime and no harvest restrictions.
How does Guarda fit into a rotation program with ZeroTol 2.0?
ZeroTol 2.0 provides immediate contact kill but degrades completely to water and oxygen with no residual - by design. Guarda fills the residual gap: apply ZeroTol 2.0 to knock down active pathogen populations, then rotate to Guarda to provide 14 days of residual inhibition between ZeroTol applications. Alternating the modes of action also prevents pathogen populations from adapting to a single chemistry.
Is Guarda safe for workers and can it be used without PPE?
Guarda has a 0-hour REI - workers can re-enter immediately after application. No restricted entry period. Combined with its 0-day PHI, it is one of the most worker-friendly and schedule-flexible fungicides available for controlled environment production.