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Corn Gluten Weed Preventer plus Lawn Food

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  • Naturally prevents crabgrass, dandelions, and 25+ other weeds
  • Provides gentle feeding and deep greening
  • Better for the environment than other pre-emergent crabgrass preventers
  • Can be used in flower gardens and in planting beds
  • Fertilizer Analysis: 10-0-2
Real Corn Gluten Weed Preventer Lawns
Product Overview
Jonathan Green Corn Gluten Weed Preventer plus Lawn Food feeds the lawn while preventing crabgrass, dandelions, and over 25 other broadleaf and grassy weeds. For optimal results, apply early in the spring—between March and early May—before weeds germinate. For a weed-free organic lawn year round, apply corn gluten meal in early and late spring and again in early and late fall.

The key factor in achieving great weed control results with this product is the proper timing of the first application. This weed control must be spread on established turfgrasses before the weeds germinate because it is only effective before weeds break the surface of the soil. Do not use this product when seeding because it will hinder the new grass seedlings from germinating. Based upon the organic nature of Corn Gluten Weed Preventer it may take a few seasons to control severe weed populations.
Coverage Guide


Coverage Amount
15 lb.
Up to 5,000 sq. ft.
How Do I Calculate My Lawn Size? First measure the length and width of your lawn. Then multiply the length by the width and deduct the square footage of any non-lawn areas (landscape bed, patio, deck, pool, etc.) from the total. Now you know how much product you need to purchase!
Shipping & Returns


  • Free ground shipping now available on orders of $75 or more! For smaller orders, shipping costs are calculated at checkout.
  • We ship orders the same day if placed by 2PM EST (later orders will be shipped the next day).
  • Orders are not shipped or delivered on weekends or holidays.
  • We offer ground and expedited shipping.


  • We offer 30-day free returns for replacement or full refund for items that are damaged or defective (shipping included). If damaged by the carrier, please file a claim with them.
  • If your items have been used or aren’t in the original packaging, we will give you a refund (minus the cost of shipping) based on the condition of the product.

View our complete shipping and return policy. If you have questions about your order, please contact our customer service team at [email protected].

Don’t Forget These Essentials

  • The best time to apply Corn Gluten Weed Preventer plus Lawn Food is in early spring before crabgrass, dandelions or other broadleaf weeds germinate.

  • 10-0-2

  • Prevents annual grassy weeds such as crabgrass, foxtail, and barnyard grass. Prevents broadleaf weeds like dandelions and pigweed. It is not effective against perennial weeds or weeds with an established root system.

  • Pre-emergent

  • Corn Gluten Meal, Nitrogen, Soluble Potash. Derived from: corn gluten meal, urea, and sulfate of potash.

  • No

    • After applying Corn Gluten Weed Preventer – wait 60 – 90 days to plant grass seed
    • After seeding – wait 45 days to apply Corn Gluten Weed Preventer
  • This product can safely be applied with any of our soil amendment products. We don’t recommend applying two of our weed controls or fertilizers together, as you risk burning your lawn. You can, however, apply two of these products together if one has fertilizer and the other one doesn’t. The rule of thumb is: if two products have different functions, it is usually possible to apply them together.

  • Apply to a dry lawn a day or two after mowing.

  • Although Corn Gluten Weed Preventer plus Lawn Food is safe for kids and pets, it works best when applied, watered in, and allowed to dry for 2 to 3 days.

  • 90% Slow release: feeds the lawn for 2 – 3 months.

  • For improved weed control and greening apply up to 4 times a year: in early and late spring, and early and late fall.

  • Our recommendations for storing your weed control:

    Place it in a cool dry place, off of the ground, out of direct sunlight, and keep it away from moisture. Keep bags (especially that have already been opened) containing unused product in a locked storage area inaccessible to children and pets. Do not store near feed or foodstuffs.


    To prevent cross-contamination, do not store near open containers of fertilizer, seed or other pesticides. Under these conditions, weed controls will last at least two years.

    • Carefully read all instructions prior to application
    • Wash hands thoroughly with soap and water after handling and before eating or drinking
    • Do not apply near water, storm drains, or drainage ditches.
    • Do not apply if heavy rain is expected.
    • Apply this product only to your lawn or garden and sweep any product that lands on the driveway, sidewalk or street back onto your lawn or garden.
    • Be aware of local ordinance requirements concerning lawn fertilizer applications. “Black out” dates may limit or prohibit lawn fertilizer applications from late fall to early spring in certain areas.
  • Always read and follow the product label before use.




    Safety Data Sheets can be found at www.jonathangreen.com/safety-data-sheets-sds. If you have a specific question, do not hesitate to contact us.


spreader product


spreader product


spreader product


spreader product


Step 1/4

Who makes your spreader?

Jonathan GreenScottsCentralCycloneEZ Republic /OrthoEarthway / AmesEchoLescoPrecision / Red DevilSta-GreenVigoro

Don’t see your spreader here? Contact the manufacturer or review your spreader’s manual.


Step 2/4

What type of spreader are you using?

Drop Rotary Handheld


Step 3/4

What is the model of your spreader?

Drop Cyclone Rotary Ace, Green Thumb Agway, Fertiloam Ames Broadcast Earthway Drop Ames Drop Echo RB 60 Rotary Standard Deluxe and Pro Hand Crank Lesco Numbered Lesco Lettered Precision Rotary Red Devil Rotary Precision Drop Red Devil Drop All Rotary Scotts PF4 Broadcast, Rotary

Don’t see your spreader model here? Contact the manufacturer or review your spreader’s manual.


Step 4/4

Select the rate that best suits your lawn needs.

Depending on the type of product you selected there may only be one application rate.

Regular Rate - 3 lb per 1000 sq ft

Note: “New lawn” indicates that you are starting a lawn from bare dirt vs overseeding or applying product to an existing lawn.


Corn Gluten Weed Preventer plus Lawn Food

Your Spreader Setting is:

Start over
  • When can I seed after applying Corn Gluten Weed Preventer?

    Wait 60 – 90 days after applying Corn Gluten Weed Preventer to plant seed.

Features You’ll Love

Our Corn Gluten Weed Preventer Plus Lawn Food is proven to prevent 25+ species of weeds before germination—and because it’s all-natural—it’s safe for kids, pets, and the environment.

Naturally Prevents 25+ Weeds

Be kind to the environment and treat lawn weeds with this eco-friendly weed preventer! Works to prevent over 25 types of lawn weeds like crabgrass and dandelions from germinating and provides a gentle feeding to your lawn.
Naturally Prevents 25+ Weeds

Patented Corn-Gluten Technology

Corn gluten naturally prevents weed seeds from developing roots after germination. This causes the weed to die in early stages of life instead of developing into a mature plant.
Patented Corn-Gluten Technology

Safe to Use Around Kids and Pets!

No one wants to have to worry about keeping kids and pets off the lawn. Put your mind at ease with a natural alternative that allows anyone (or any pet) to enter the lawn immediately after application, unlike many synthetic chemical herbicides.
Safe to Use Around Kids and Pets!

How to Apply


For Lawns:

  • We recommend using a spreader to evenly distribute the product onto your lawn.
  • Check to make sure the spreader opening at the bottom of the hopper is closed.
  • Set the spreader according to the recommended setting on the packaging or use our Spreader Settings Tool above.
  • Apply around the perimeter of the lawn to establish a turning area. Then run the spreader back and forth within the area outlined by your first perimeter application. Always allow overlap to avoid gaps in coverage.

For Gardens:

  • Spread Corn Gluten Weed Preventer on the surface of the soil after flowers or other plants have been planted.
  • Do not till it in. Incorporating this product into the soil will hurt the roots of the flowers, vegetables, and landscape plants in the garden.


  • Sweep any excess granules off of hard surfaces and back onto the lawn.
  • For best results, irrigate the treated area after application for 15 to 30 minutes and then allow it to dry for 2 to 3 days. Excessive rainfall or irrigation may require re-application for effective weed control.
  • Do not seed for 60 to 90 days after application.
Corn Gluten Weed Preventer plus Lawn Food 5,000 sq. ft.
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