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Green Earth Ag and Turf

NemaShield HB

NemaShield HB

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NemaShield HB contains beneficial nematodes that provide a safe, effective control of a variety of pest insect larvae. The nematode actively searches for insect larva and enters the larva through a natural body opening, sometimes directly through the skin. The nematode excretes specific bacteria from its digestive tract before it starts to feed. The bacteria multiply very rapidly and convert the host tissue into products that can easily be taken up by the nematodes. The larva dies within a few days and the color changes to orange-red or red-brown. The nematodes multiply and develop within the dead insect. As soon as the nematodes are in the infectious third stage, they leave the old host and start searching for new larvae. When there is no new host present, the nematode population will slowly decrease.

NemaShield HB is Labeled for the Following Insect Pests

NemaShield HB controls soil dwelling and boring larvae (caterpillars) of many species of beetles and flies. Target hosts are: cutworms, plant-boring larvae such as the banana moth, various other caterpillars, vine weevil larvae, white grubs and leatherjackets. This nematode is especially effective against the black vine weevil, Otiorhynchus sulcatus.

    NemaShield HB General Treatment

    • Packages contains either 50 million or 500 million nematodes. The general application rate is about 25¬†million per 1,000 square feet (1 billion nematodes per acre), depending on infection level.
    • To prepare the solution Empty the contents of the package into a bucket containing about one gallon of cool water (60 to 75¬įF), then stir. Let the entire solution soak for 5 minutes. Stir again thoroughly, then transfer the contents into a larger barrel or spray tank and fill it up with water until the required amount of solution is reached. Apply the solution immediately, using a watering can, irrigation system, knapsack or motorized sprayer (maximum pressure of 150 psi). To avoid blockages, all screens should be removed. The spray nozzle opening should be at least 1 mm (1,000 micron). Evenly spread the solution over the ground area to be treated. Continuous agitation should take place to prevent the nematodes from settling out. Water plants after application to wash the nematodes off the foliage and into the ground.
    • The nematodes should be applied when pest insects are present, but at low population density. For optimal results, apply to moist soil media with temperatures between 50¬įF and 86¬įF.
    • Keep the soil moist during the first two weeks after application.
    • Nematodes are susceptible to UV light, apply on cloudy days or late in the afternoon or evening.
    • Nematodes can be stored in the refrigerator until the expiration date on the package.
    • Do not freeze.

    grubGONE! and beetleGONE! (Btg) as an Alternative

    Though nematodes are still effective in pest insect control, Green Earth Ag & Turf now recommends grubGONE! for all its customers treating plants, trees, and turf for meddlesome grubs and beetles. grubGONE! uses a new, university tested biological agent (Btg) that safely targets grubs and beetles without harming pollinators. It is a safe, natural, and highly effective product available from Green Earth. 

    NemaShield HB Ingredient

    • Heterorhabditis bacteriophera.

    NemaShield HB Available Sizes and Coverage

    ‚ÄĘ 50 Million Nematodes (Covers 2,000 Square Feet).
    ‚ÄĘ 500 Million Nematodes (Covers 20,000 Square Feet or 1/2 Acre).

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    Wholesale or Bulk Price Inquiries

    Wholesale & Bulk Price Inquiries & Orders

    Green Earth Ag & Turf brings a decade of experience providing Professional Landscapers, Farmers and Indoor Growers like you the best in organic products for higher yields, aesthetics and profits!  And we have discounted professional or wholesale prices that are easily accessible for you.

    If you would like to open a wholesale account with us or for bulk orders and professional pricing you can fill out our quick and easy online form by CLICKING HERE. 

    Or call /e-mail us at (866) 374-5101 or

    Shipping & Return Policy

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

    At Green Earth Ag & Turf LLC, 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 cannot 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 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.  Green Earth Ag & Turf LLC 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.  Green Earth Ag & Turf LLC 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 Green Earth Ag & Turf LLC, 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 any 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 we must follow the policies and processes of the merchant, and this will very much slow down the resolution process and ultimately your resolution and compensation.  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 manner in which we are approached. This then becomes a legal issue and may be referred to our legal counsel.  We also reserve the right to forward the threatening e-mail to the proper review agencies and state or federal authorities, and it is our policy to do so.

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