RootShield Plus WP Organic Fungicide

Unfortunately we do not ship to California addresses

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$124
List price
$145.25
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RootShield® PLUS+ WP (Wettable Powder or Dissolvable Powder) naturally protects plants from soil-borne diseases such as Phytophthora, PythiumRhizoctonia, and Fusarium as well as other plant diseases. Easy to mix into media, RootShield PLUS+ now contains two active ingredients, Trichoderma harzianum Rifai strain T-22 and Trichoderma virens strain G-41. When applied, these microbes colonize plant roots and protect from damping off caused by common soil pathogens. RootShield PLUS+ also produces stronger root systems that have greater soil exploration and moisture uptake, resulting in better plant quality and marketability. RootShield PLUS+ is compatible with many commonly used fungicides, fertilizers, insecticides, and herbicides. It is an excellent tool for fungicide reduction and resistance management.

RootShield PLUS+ WP Benefits

  • Next generation RootShield that now prevents soilborne Phytophthora, and improved control of hot season Pythium (P. aphanidermatum).
  • Also controls Fusarium, Pythium, Rhizoctonia, Thielaviopsis and Cylindrocladium.
  • 0-hour REI / 0-day Pre-Harvest Interval (PHI).
  • Costs less than 2¢ per 6-inch pot.
  • Promotes a healthier root system, increasing root mass potential.
  • For media incorporation in nurserie, greenhousee and vegetables.
  • One application provides up to 12 weeks of protection.

RootShield PLUS+ is organic and environmentally-friendly and can be used against many soil diseases without worrying about pets, animals and children.

RootShield PLUS+ WP is Labeled for the Following Diseases:

  • Pythium
  • Phytophthora
  • Rhizoctonia
  • Fusarium
  • Cylindrocladium
  • Thielaviopsis

...Plus Many More.  See LABEL HERE for full list.

RootShield PLUS+ WP General Treatment Instructions

  • Apply RootShield PLUS+ WP at a rate of 2 to 3 teaspoons (3 teaspoons is 1 tablespoon) per 5 gallons.
  • For larger volumes, use at 3 to 5 ounces per 100 gallons.
  • For trays/flats/liners less than 4 inches deep, use 50-100 gallons per 800 square feet.
  • For trays/flats/liners 4 inch or deeper, use 100 gallons per 400 square feet.
  • For 6 inch pots, use 1 cup per pot.

Frequency: Re-apply RootShield PLUS+ every 10-12 weeks or when transplanting/up-planting to larger containers or out into fields.

CompatibilityRootShield PLUS+ is compatible with many products commonly used in tank mixes by plant, tree and turf care professionals. Our scientists have tested various products for tank mixing compatibility, please see the chart below. 

For Additional General Application Information Click Here
For Small Volume (5 Gallon) Application Information Click Here
RootShield Plus+ Compatibility Chart

RootShield PLUS+ WP Active Ingredients

Trichoderma harzianum Rifai strain T-22* ........ 1.15%.
Trichoderma virens strain G-41** .......................... 0.61%.
*Contains at least 1.0 x 107 colony forming units per gram dry weight.
**Contains at least 5.3 x 10colony forming units per gram dry weight.

RootShield PLUS+ WP Sizes and Coverage


  • 1 lb. Wettable Powder (Covers 10,000 square feet).
  • 3 lb. Wettable Powder (Covers 30,000 square feet).
  • 30 lb. Wettable Powder (Covers 7 Acres).

Product Information

Shipping Information

Unfortunately we do not ship to California addresses

We offer a 30 day return policy from the date of shipment


At GrowItNaturally.com, we pride ourselves in making all attempts to get your order out the same day (if ordered early enough) or within one business day of your order.  We do our best to securely package your order, and you will promptly receive an e-mail with tracking information when your order is packed for shipment.  We ship many orders every day, and the carriers usually don't notify us of delays or damage, so we ask that you track your packages and promptly let us know if there is a delay.  We will do our best to solve the problem, but many times may require the receiver to work directly with UPS or The US Postal Service.  Once the carriers (UPS or the USPS) pick up the package, we have no control over delays or transit time.  Transit times are no longer guaranteed by UPS or USPS, even though it may display such times.  We can not refund money for or speed up deliveries not delivered in the time listed by the carriers.  We are not responsible for orders that are delivered by the carrier and lost or stolen.  For products damaged by the Post Office or UPS, it is required that the original box, label and product be saved.  Pictures must be taken of the damage or we will not guarantee a rebate or replacement if the damage occurs in transit.

Free Shipping Policy:
For items with free shipping, we have the right to choose the carrier, either the US Postal Service or UPS.  Please e-mail us if you require a PO Box only or other shipping requirements.  If one carrier is required and it is not the most cost-effective means, we reserve the right to charge additional shipping fees.  

Return Policy:
Please email us at info@GrowItNaturally.com prior to making any returns so we know how to credit and return product payments.  We inspect all returns prior to making any refunds; refunds are only made after product is returned in good condition.  Products may not be returned if the seal has been broken.  Shipping charges are not refundable. All returns must be in new, unused, and mint condition.  Product must be returned to us prepaid in the original manufacturer’s packaging.  GrowItNaturally.com is not responsible for any shipping damage in transit or packaging failures, leaks etc.  The buyer is responsible for any return shipment costs, including products that shipped to buyer with "free shipping".

Please make sure that your return is packaged securely and shipped via UPS, FedEx, or the USPS and note the tracking number.  All packages should be insured in case of breakage or loss.  GrowItNaturally.com is not responsible for returned items damaged or lost in transit.

If you order an item and then decide you do not want the item, it is your responsibility to return the purchase to us prepaid. Refusing delivery does not constitute a waiver of your responsibility and the return shipping charges will be deducted from any refund.

Credit Card and PayPal Claims Filed First or Review Extortion:
At GrowItNaturally.com, we pride ourselves on excellent customer and technical service.  When issues do arise, often due to carriers such as UPS or the Post Office, we respond and work out the problems to the best of our abilities. Our reviews show our extensive service record.  Please contact us via e-mail or telephone first to see if the problem can work out quickly and fully through our extensive troubleshooting experience and highly rated customer service department.

PayPal and Credit Card Claims Filed Before Contact: If a PayPal or credit card claim is filed before first contacting us directly and attempting to resolve it, we can not help out and further until the claim is fully processed, which can often take weeks or months.  If we are contacted before a claim we can often resolve issues the same day or very quickly.  However, once a claim is filed our hands are tied and this will very much slow down the resolution process.  We reserve the right to appeal any unfounded claims, especially those not initially attempted to be resolved with us directly, and it is our policy to do so.  

Review Threats: Our policy is that we will not respond when review threats are the first contact; such as when a threat of a bad review if a full refund is not sent is the initial contact to us. This then becomes a legal issue and may be referred to our legal counsel.  We also have every right to forward the threatening e-mail to the proper review agencies and state or federal authorities.

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