Organic Bye Product That's Also
A Natural Weed Killer * Prevent weed seedlings growing where you plant out,
* Add a natural fertilizer for your cultivated plants,
* Revitalise thin flakey lawns,

This page is about a natural weed killer. Made from surplus organic matter from agriculture, it won't harm any wildlife. We shouldn't be too surprised to learn that plants naturally produce chemical defences. And these substances can be used by gardeners almost like they are in nature.

Now this organic material has been specially formulated for American gardeners and made available on the links below. Actually it came from a chance discovery made at Iowa State University. They found a natural weed killer that inhibits the growth of seedling roots. But it only works on small emerging seedlings. You should check how to use it properly below.


Use it safely under cloches where restricted access hinders weeding, on thin flakey lawns, or when planting flowers and vegetables.

And it's easy to apply and especially useful to combine with planting out after growing seedlings in trays and modules. Indeed you can use it freely without fear of harming important plants. That's because this natural and organic material only prevents germinating weed seedlings rather than harming your ready rooted plants.

Another benefit comes as it breaks down to release a balance of N:P:K to boost the growth of established plants. This high protein material is 10% nitrogen. For example, on thin ragged lawns you get a two pronged attack against weeds. One to inhibit weed seedlings (don't use if you're re-seeding). A second to stimulate strong healthy grass, which is itself important in weed control.

There is a modern trend in using sheet mulch around plants like fruit. However, artificial sheet mulch hampers access to feed your plants properly and doesn't help important soil organisms such as earthworms. But the alternative weed killer feeds your soil and plants as well as being useful as a natural weed killer.

And as a boost of organic fertilizer, it's ideal for hungry crops too. But when you plant module grown lettuce and cabbage straight out with natural weed killer you won't have to worry about that annual flush of weeds that so readily takes advantage.

Corn Gluten  but not corn meal - helps to reduce these weeds: Crabgrass, Creeping Bentgrass, Smartweed, Dandelions, Redroot Pigweed, Purslane, Lambsquarter, Foxtail, Barnyard Grass and Bermuda Grass.

The best time to apply it is when the weeds are germinating in spring - about the time yellow Forsythia comes into bloom. Work it into the top few inches of soil. Application rates of 10 to 20 pounds per 1000 square foot are recommended - that's about 1 to 2 pounds per 11 square yards. Higher rates are even more effective.

Corn Gluten powder (not corn meal) is ideal for raking into lawns and granulated corn gluten for use in drop spreaders.

Bare in mind that this natural weed killer is also a nitrogen fertilizer so further fertilizer applications can be reduced.

Corn Gluten needs to be moist before it can go to work. As the weeds also love a good shower of rain before germination this works well.

But ideal weed killing conditions occur when the emerging weed seedlings encounter a drier period. With virtually no root they can't survive.
Note that Corn Gluten does not control weed seed emergence under irrigation systems or where the soil is continually moist.

Naturally the power of Corn Gluten diminishes over time as it should. A second application before the summer recess is probably advisable. Also, as many weeds germinate in the fall, an application at the end of summer should give effective weed control in good conditions. And fewer weeds now, means less work in future.

So there it is - a natural weed killer. You can win the war on weeds with a little organic help. And unlike hoeing this natural weed killer won't stir yet more weed seeds into life.

    You can use Corn Gluten in the following situations:  

  • Especially where cages, tunnels or cloches reduce access to hand weed,
  • On thin or flakey lawns 4 - 6 weeks after sowing where weed seed invasion is a problem,
  • On beds ready for planting up with flower plants,
  • On open ground waiting to take crop transplants,
  • Between transplanted rows of hungry crops: lettuces, brassicas, onions, leeks,
  • Around transplants of small fruit: strawberry, raspberry, gooseberry,
  • Also use where spent compost is applied as a top dressing,
  • For pots and containers - indeed any area into which you are not sowing seeds but want to prevent weed seedlings.

Click to Find Lawn Fertilizer in Your Country.

Help To Control Seedling Weeds Around Your Plants &
Bare Patches In Lawns, & in Cloches or Undercover (after watering first).

My Neighbour's Weed Patch

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^ On top of weeds in awkward places with Natural Weed Killer.

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By Michael E. J. Scott.
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