Herbicide. Product for control of weeds
Warm Season Grass. Grasses that go dormant in the winter in mild climate areas. They normally will not grow in cold winter areas.
Weed. A plant growing where it is not wanted. This could be a flower or a tree.
Contact Herbicide. A herbicide that only kills the plant material it is sprayed on. They will not kill the root systems.
Non Selective Herbicides. Controls the plant material it is sprayed on. See also Selective Herbicide below.
Preemergence Herbicide. Controls weeds as they germinate. Most will not control emerged weeds.
Postemergence Herbicide. Controls weeds that are out of ground. Most have no soil activity.
Residual Herbicides. Generally, a preemergence that stays in the soil for a specific amount of time to prevent weed germination.
Selective Herbicide. Many herbicides are selective in what they control. That’s why we can take broadleaf weeds out of your lawn or, control grasses in your flowerbeds. See also Non-Selective Herbicide above.
Systemic or Translocated Herbicide. These are herbicides that are taken up by the plants through the leaves and moved throughout the plants system killing the entire plant, roots and all.
Drift. Letting your spray get where you don’t want it, usually because of wind or poor application technique.
Formulations. This is how a chemical is produced and packaged. It is a carrier for the active ingredient. Dry formulations are WP (wettable powders) WDG (water dispersible granules) for mixing with water and dusts or granules for using as is. Liquid formulations are EC (emulsifiable concentrates), SC (soluble concentrates), flowables (suspensions) and AS (aqueous solution) to name a few. These are normally produced different ways to get insoluble, active ingredients to mix with water.
Oil Concentrate. This term is often used to describe an adjuvant that is added to the spray mix to improve performance of herbicide (weed killer) products. Oil concentrate products are sometimes referred to as “Spreader-Stickers” or “Penetrants” when used to help the herbicide adhere to the weed surface and penetrate into the weed for better uptake. Monterey Herbicide Helper is an example of an oil concentrate product that is recommended for use with Grass Getter and SedgeHammer+ herbicides.
Incorporate. Usually referred to with herbicide use, which means to mix into the soil.
Rainfastness. Refers to the period other material must be on the plant before a rainfall or irrigation to retain its effectiveness.
