Trichoderma Harzianum (Strain T-22)

T-22 is an aggressive beneficial fungus that out-competes "bad" fungi for space and resources.

• Pythium & Phytophthora: The leading causes of damping-off and root rot.
• Fusarium & Rhizoctonia: Soil-borne diseases that cause wilting and stem rot.
• Sclerotinia: Targets a wide range of vegetables and ornamentals.
• Secondary Benefit: Induces systemic resistance, making the plant naturally more resilient to foliage-based stresses.

Trichoderma harzianum T-22 is an adaptable strain, engineered to colonize roots across a wider range of conditions than most biological fungicides. However, a few environmental factors determine how quickly and aggressively it establishes.

• Temperature: Active between 50°F – 95°F (10°C – 35°C). Peak colonization occurs between 65°F – 85°F — the same range most tropical houseplants and indoor grows prefer.
• Moisture: T-22 spores require moisture to germinate and begin root colonization. Apply as a drench to a moist (not waterlogged) medium. Bone-dry soil delays activation.
• pH: Performs best in a pH range of 5.5 – 7.0. Compatible with most soil, coco coir, and perlite mixes used in tropical plant cultivation.
• Light Sensitivity: Do not apply T-22 in direct, intense light. UV exposure can degrade spore viability. Water in during early morning or evening, or under grow lights rather than direct sun.
• Compatibility: T-22 is not harmed by beneficial nematodes or predatory soil mites. Avoid applying alongside broad-spectrum fungicides, which will kill the colony.

Trichoderma T-22 is a foundational "preventative shield." It is most effective in these specific growing environments:

• The Tissue Culture (TC) Transition: TC plants are raised in sterile environments and lack a natural immune system. Applying T-22 during the acclimation or "hardening-off" phase provides immediate biological protection when they are most vulnerable to damping-off.
• The Hydroponic & Sterile Medium Guard: In Coco Coir, Rockwool, or Perlite, your medium is a "blank slate." Using T-22 ensures the "good guys" occupy the root zone first, leaving no room for pathogens to establish.
• The High-Stress Transplant: Every time you up-pot, roots suffer microscopic tears. A T-22 drench during transplanting "plugs" these entries and stimulates faster root recovery.
• The Mother Plant Insurance: For plants that stay in the same pot for long periods, T-22 boosters keep the rhizosphere healthy and active, ensuring your clones are taken from a vigorous, disease-free parent.

Trichoderma T-22 is a concentrated wettable powder. Because the spores are living organisms, they do not "dissolve" like sugar—they stay suspended in the water. To prevent clumping and ensure the spores actually reach your roots, follow this simple process:

1. Measure Your Dose
Choose the rate that matches your plant's stage:

• Tissue Culture (TC) & Cuttings: 0.5 teaspoons per gallon (0.5g per Litre).
• Established Plants: 1 teaspoon per gallon (1g per Litre).
• Mother Plants & High-Stress Areas: 1.5 teaspoons per gallon (1.5g per Litre).

2. Create Your Concentrated Slurry

• Place your measured dose into a small container (like a measuring cup or jar) with just one cup of room-temperature water.
• Whisk or stir vigorously for 30 seconds until it forms a smooth, uniform liquid.
• Why? This "pre-mix" breaks up dry clumps. If you dump dry powder into a large tank, it will float on top and fail to colonize your roots.

3. Dilute & Apply

• Pour your concentrated slurry into your final volume of water (watering can, bucket, or reservoir) and stir.
• Drench the Roots: Pour the mixture directly at the base of the plant until the root ball is saturated.
• Keep it Moving: If you are watering many plants, give the bucket a quick stir every few minutes. The spores are heavy and will naturally settle at the bottom if left still.

Unlike predatory mites, which are active insects, Trichoderma T-22 is shipped in a dormant spore state. This makes it much more resilient during transit, but proper storage is still the key to its long-term potency.

• Transit Durability: T-22 spores are shelf-stable at room temperature during shipping. Short exposure to standard transit temperatures will not "kill" the product. However, we recommend retrieving your package promptly to avoid prolonged exposure to extreme heat (over 100°F).
• Immediate Care: Upon arrival, store the sealed pouch in a cool, dry, and dark place. A kitchen cupboard or climate-controlled grow room is perfect for short-term use.
• Long-Term Storage: If you do not plan to use the entire package within 6 months, we recommend refrigeration (35°F–45°F). This keeps the spores in a deep dormancy and can extend their viability for up to 18 months.
• Do Not Freeze: Freezing can damage the cellular structure of the spores. Always keep the product above 32°F.
• Keep Sealed: Humidity is the enemy of dormant spores. Keep the pouch tightly sealed when not in use to prevent moisture from "activating" the spores inside the bag.

No, it is a beneficial fungus. However, it makes your fertilizer work better by "solubilizing" nutrients—breaking down minerals that are normally trapped in the soil so the plant can easily drink them up.

T-22 is most effective as a preventative. If your plants are already dying from advanced root rot, T-22 may struggle to catch up. For best results, apply to healthy plants or at the very first sign of stress.

A single application at planting can last for months, but for high-intensity indoor grows, we recommend a "booster" drench every 4–6 weeks to ensure the root zone remains fully colonized.

Not at all. Trichoderma is a fungus that targets other fungi; it does not harm beneficial insects or microscopic worms. In fact, they often work together to create a healthier soil ecosystem.

Usually, no! That is often the Trichoderma colony growing on the soil surface. Unlike gray mold or damping-off, this "good" fuzz is protecting your plant.

Tissue Culture plantlets are raised in a sterile, 100% humidity environment and lack the "microbial memory" needed to survive in the real world. When you move them into soil or coco, they are entering a biological vacuum. T-22 acts as an immediate "bodyguard," colonizing the roots before harmful pathogens can. It also helps the plantlet develop its waxy cuticle and root structure faster, significantly reducing "transplant shock" and the high mortality rates often seen during the hardening-off phase.