ED Rosenthal’s Organic (OMRI) ZT Concentrate - Essential Oil Blend - 250mL

Ed Rosenthal’s Zero Tolerance – Organic Pest & Disease Control

Ed Rosenthal’s Zero Tolerance™ is a powerful natural garden pest control solution designed to outperform traditional organic sprays and harsh chemical pesticides. Formulated with premium food-grade essential oils—including cinnamon, clove, rosemary, and thyme—Zero Tolerance delivers fast, effective control of common garden pests without leaving harmful residues.

Unlike neem oil, which can linger on plant surfaces, Zero Tolerance fully evaporates after application, keeping plants clean and safe. It is also a safer alternative to pyrethrum-based products, which are toxic to fish and reptiles, making Zero Tolerance ideal for environmentally conscious growers.

Highly effective against thrips, spider mites, broad mites, and fungus gnats, Zero Tolerance works best as part of an Integrated Pest Management (IPM) program, especially when used alongside beneficial predator insects for long-term, 100% organic control.

Zero Tolerance™ Concentrate – Key Benefits

• 100% Natural & Organic Formula
  Made with food-grade essential oils that evaporate completely, leaving no residue.

• Broad-Spectrum Pest Control
  Effective against thrips, spider mites, broad mites, fungus gnats, and other soft-bodied pests.

• Residue-Free Protection
  Safe for use throughout all growth stages, including flowering.

• IPM Friendly
  Compatible with predator-based pest control programs for sustainable, long-term results.

• Environmental Safety
  Safer for gardens, beneficial insects, and surrounding ecosystems compared to chemical pesticides.

• Big Coverage, Small Bottle
  Just 250ml creates 12.5 litres of effective pest control, making Zero Tolerance a smart, economical choice for growers

Best Practices & Usage Tips

Preventative Application
Use Zero Tolerance proactively to prevent pest outbreaks. Once infestations are established, control becomes more difficult and requires repeated applications.

Fungus Gnat Control
Spray the surface of grow media once per day for 7 consecutive days to effectively disrupt fungus gnat life cycles.

Spider Mites & Thrips

• Remove all affected leaves and plant material from the grow area

• Spray the entire plant thoroughly

• Apply 3 treatments, spaced 2 days apart

Residual Barrier Protection
Spray walls, floors, tent zippers, and entry points to create a natural deterrent that helps prevent pests from entering the grow space.

Lighting Precautions
Apply with grow lights dimmed or turned down to reduce plant stress. Restore lighting once plants are completely dry.

Propagation & Domes
Lightly spray the inside of propagation domes (avoiding direct contact with tender seedlings and cuttings) as a preventative measure against pests and pathogens.

Why Choose Zero Tolerance?

Zero Tolerance is a natural garden solution, not a harsh chemical. Its effectiveness relies on consistent application, patience, and proper garden hygiene. When used correctly, it supports healthier plants, cleaner grow environments, and long-term pest control without compromising plant safety or environmental responsibility.