RootShield® PLUS+ WP - 3lb - OMRI Listed®

RootShield® PLUS+ WP 3lb — OMRI Listed® | Dual Trichoderma | 12-Week Root Protection

RootShield PLUS+ is a biological root disease fungicide containing two active Trichoderma strains — T. harzianum Rifai strain T-22 and T. virens strain G-41 — that colonize plant roots and physically and biologically shield them against major root-damaging fungi. The Trichoderma fungi establish in the root zone, outcompeting pathogens for space and resources while producing secondary metabolites that suppress pathogen growth. The dual-strain formulation of RootShield PLUS+ provides broader disease control coverage than single-strain products. One application provides up to 12 weeks of protection. REI: 0 hours. OMRI Listed for organic production.

Key Features & Benefits

• Dual Trichoderma Strains — Enhanced Coverage: T. harzianum T-22 and T. virens G-41 provide complementary colonization and biocontrol activity against a broader range of root pathogens than single-strain products — the two strains work together to provide more comprehensive root zone protection.
• Grows on Roots — Physical Barrier: Trichoderma fungi colonize root surfaces and the surrounding rhizosphere — establishing a living biological shield that outcompetes pathogens for root infection sites before disease can establish.
• 12-Week Protection from a Single Application: Once established in the root zone, RootShield PLUS+ provides persistent protection for up to 12 weeks — reducing the number of fungicide applications needed across the production cycle.
• Controls Major Root Diseases: Effective against Pythium, Rhizoctonia, Fusarium, Cylindrocladium, and Thielaviopsis — the five major root rot pathogens affecting greenhouse, nursery, and container crop production.
• 0-Hour REI: No re-entry restriction — plants can be handled immediately after application without worker protection equipment concerns.
• OMRI Listed® for Organic Use.
• 3lb WP — Wettable powder formulated for drench or dip application — mix into water and apply as substrate drench, bareroot dip, or cutting treatment.

Who Should Use This

Commercial greenhouse growers, nursery producers, propagation operations, and transplant producers managing Pythium, Fusarium, Rhizoctonia, and other root disease pressure. RootShield PLUS+ is particularly effective as a preventive tool applied at transplanting, seeding, or rooting to establish Trichoderma colonization before root pathogens can take hold.

Frequently Asked Questions

How does RootShield PLUS+ differ from the original RootShield WP?

RootShield WP contains a single active ingredient: T. harzianum T-22. RootShield PLUS+ adds a second strain — T. virens G-41 — providing broader root disease control coverage, particularly against pathogens where dual-strain competitive colonization is more effective than single-strain products.

How should RootShield PLUS+ be applied?

Application method varies by formulation. Wettable powder formulated for drench or dip application — mix into water and apply as substrate drench, bareroot dip, or cutting treatment. See the product label for specific rates and application timing for your crop type and production system.

Can RootShield PLUS+ be used with other fungicides?

Avoid applying broad-spectrum soil fungicides that could suppress Trichoderma colonization in the root zone simultaneously or immediately after RootShield PLUS+ application. Foliar fungicides are generally compatible. Consult the product label for specific compatibility guidance.