BioWorks RootShield WP — Trichoderma harzianum Biological Fungicide, 3 lb

RootShield WP is an EPA registered, OMRI listed biological fungicide based on Trichoderma harzianum strain T-22 — a highly effective beneficial fungus that colonizes plant roots and protects them from soilborne pathogens. Applied as a soil drench or media incorporation, RootShield provides up to 12 weeks of root disease protection in greenhouse, nursery, and hydroponic production systems.

Special Order Item — this product ships from the manufacturer at the time of purchase. Shipping times may vary.

Key Features

• Active ingredient: Trichoderma harzianum strain T-22
• Controls Pythium, Rhizoctonia, Fusarium, Thielaviopsis, and Cylindrocladium
• Colonizes roots within 24 hours — blocks and actively attacks pathogens
• Up to 12 weeks of protection per application
• OMRI listed for organic production | VeriFlora approved
• EPA registered biological fungicide
• Wettable powder (WP) formulation — apply as soil drench or media incorporation
• 3 lb box | Green scoop included = 1.5 oz of product

Application

Drench into growing media at transplant or seeding. Compatible with hydroponic, rockwool, and soilless production systems.

Also available: RootShield WP 1 lb and RootShield WP 30 lb. Browse more Beneficial Microbiology or return to Pest & Disease Controls.