TX Organic Research Center



Organic Herbicide

Here are two versions. Let me know which one works best for you.

1 gallon full strength vinegar
1 cup orange oil
1 teaspoon Dr. Bronnerís Peppermint Soap or other mild soap


1 gallon full strength vinegar
1 cup orange oil
1 cup molasses
1 teaspoon Dr. Bronnerís Peppermint Soap or other mild soap  I use Bio Wash.

Vinegar strengths vary. 5% is regular vinegar. 10% is pickling vinegar. 20% is the strongest you should ever use and it is dangerous and needs to be handled carefully. Avoid contact with skin and breathing the fumes. Be sure to keep the mix well shaken while spraying. Avoid products that are made from glacial acetic acid.

Crabgrass Killer is effective at killing several of the most common species of weeds without serious injury to the turf.

From an environmental point of view, Crabgrass Killer is one of the safest herbicides on the market. It's made from all-natural ingredients, none of which are harmful to your lawn, your pets, or your kids. The active ingredient is cinnamon bark, and the inert ingredients include baking soda, wheat flour, cumin, and corn flour.

It is one of the few selective organic weed killers. It's a powder and used by wetting and then dusting the weeds you wish to kill. During the hotter summer months, the grass in the very immediate area may turn slightly yellow temporarily, but no long-term damage will be done.
This canít be said for all herbicides.

In addition to the mentioned weeds, it seems to be effective on Virginia buttonweed, false strawberry and other fuzzy-textured weeds.

Crabgrass Killer Ė  Garden Weasel Crabgrass Killer is a natural weed killer used to kill crabgrass, chickweed, and other similar weeds. Cinnamon bark is the active ingredient. This product is especially effective on clovers of all kinds. Itís applied dry to moistened foliage and kills quickly without hurting most turfgrasses.

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