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KeyPlex 350 OR

KeyPlex 350 OR

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Founded in 1980, KeyPlex Micronutrients has continually focused on researching plant health, establishing a link between the necessary plant nutrient requirements and the most efficient way to supply them. Thus, the development of KeyPlex’s patented blend of micronutrients, yeast hydrolysate and humic acid found in each of our products fuels the energy requirements for defense, growth and reproduction necessary in plant production and stabilization. Our careful selection of raw materials, together with our precise standards of production, provides a consistently reliable method of insuring that the optimum level of plant nutrition and effectiveness is realized.

Three decades later KeyPlex research continues to unravel the complex world of plant health and its relationship with nature. Though understated, the use of KeyPlex makes the complexity of plant health universal and simple.

KeyPlex is environmentally-friendly and
is made from all naturally fermented products.

KeyPlex 350 OR Benefits

  • Greater seed germination
  • Increased Crop yield
  • Better turf quality and density
  • Improved Flowering
  • Enhances stress tolerance (heat/cold, drought, pest and disease, pesticide, salinity etc...)
  • Foliar and root uptake is rapid
  • Increase leaf chlorophyll and photosynthesis
  • Builds healthy soil biology (Prebiotic)

The KeyPlex Science

Over three decades of scientific studies and field trials on KeyPlex have proven and demonstrated that that these products are highly effective. Thee scientific data that has come from this intense research confirms that KeyPlex elicits the production of defensive proteins (SAR), stimulates plants resistance to infection and aids in eradicating the damaging effects of environments stresses. In 2004 the EPA approved KeyPlex 350, the only biopesticide with micronutrients, providing growers a safe and effective alternative to traditional materials. KeyPlex is trusted by many of the most innovative and progressive growers and turf care professionals in the world.

In Focus: Four Questions With KeyPlex Executive Vice President Dante Brunetti on Systemic Acquired Resistance (SAR).

Keyplex 350 OR Application Instructions

Apply KeyPlex in a sufficient water volume to thoroughly cover turf or foliage. Apply specified rate in 20 to 100 gallons of water per acre.

  • Turf:¬†Apply 1 to 2 quarts of product per acre as¬†a foliar spray (0.75 to 1.5 fluid ounces per 1,000 square feet). Repeat at 7 to 21 day intervals, as needed.
  • Vegetables (including pepper and tomato):¬†Apply 1 to 2 quarts of product per acre as a foliar spray starting at the 4-6 leaf stage. Make two applications prior to bloom. Repeat applications at 7-14 day intervals, as needed. On other vegetables, make one application three to five days after emergence or transplanting. Repeat applications at 7-14 day intervals, as needed.
  • Field Crops (including peanuts, cotton and tobacco):¬†Apply 1 to 2 quarts per acre of product as a foliar spray two to four weeks after emergence or transplanting, followed by up to 4 additional applications at 14 to 21 day intervals.
  • Small Fruits (including cranberries, blueberries and strawberries):¬†Make one application prior to bloom followed by up to three applications at 14 to 21 day intervals as needed.

KeyPlex 350 OR Active Ingredient

Yeast Extract Hydrolysate from Saccharomyces cerevisiae .......... 0.063%.






Homeowners can now order the same great products that the pros use through our online store by clicking below.  

Order Online 

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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