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To combat invasive annual and perennial broadleaf weeds, it's usually best to attack them before they emerge with a pre-emergent herbicide. One particular herbicide that has proven to be effective against a number of different weeds and also has post-emergent effectiveness is an active ingredient known as pendimethalin. 

Solutions Pest & Lawn has a quality offering of herbicide products which contain the active ingredient pendimethalin and we regularly suggest this product to our customers who want to protect their crops or landscapes from broadleaf weeds. On this page we will share with you background info about pendimethalin, it’s mode of action and benefits. You can also access this page to shop our entire line of pendimethalin-based products.

What is Pendimethalin?

Pendimethalin (chemical name: N-[1-ethylpropyl]-3,4-dimethyl-2,6-dinitrobenzenamine) is a non-selective herbicide specially designed for the control of a broad range of weeds including annual and perennial grasses broadleaf species and woody species. Imazapyr is from the herbicide family imidazolinone.

Pendimethalin was initially registered in 1972 and approved by the EPA for pre-emergent and post-emergent control of a variety broadleaf and grassy weeds on many agricultural crops, such as: cotton, corn, sorghum, peanuts, rice, beans, peas, wheat, potatoes, soybeans, sun- flowers, tobacco, ornamentals, non-bearing fruit and nut crops and vineyards. 

Pendimethalin is a systemic dinitroaniline herbicide which behaves much like the active ingredients oryzalin and trifluralin, the chemical inhibits germination and seedling development. It comes usually as either a granular or an emulsifiable concentrate. In its original form, pendimethalin is a crystal-like solid that appears orange yellowish in color and has a fruity odor. 

How Does Pendimethalin Work?

Pendimethalin’s mode of action is that it is an inhibitor of plant cell division and cell elongation.  It is absorbed into the target plant at the roots and shoots and the plant is no longer able to grow.

Pendimethalin is a selective herbicides which means that rather than killing all plants the chemical comes into contact with pendimethalin kills only certain kinds of weeds that are detrimental to the desired crop. Target plants include annual grasses and broadleaf weeds.

Browse our selection of pendimethalin contained products below. For more information about pendimethalin or other active ingredients in our herbicides, reach out to us with your questions at 800-479-6583 or email us at askapro@solutionsstores.com.

Featured Products Which Contain Pendimethalin

Pendulum 2G - This product comes in granule form. This product provides weed Control at a low cost-per-acre price. Over 335 ornamental species are listed on the label. Pendulum 2G is one of the few herbicides recommended by university specialists that has shown excellent crop safety on annuals, perennials and woody ornamentals.


Pendulum 3.3 EC - This product is an emulsifiable concentrate. Pendulum 3.3EC herbicide provides pre-emergence control of most annual grasses and certain broadleaf weeds as they germinate in any turf grass site. This weed killer for lawns can also be used in and around field and container nurseries, established landscape ornamentals and ornamental gardens, groundcovers, nonbearing fruit and nut trees. It can be applied for general grounds maintenance around parking lots, jogging paths, vacant lots, buildings and fence lines for superior weed control. Pendulum controls weeds as they germinate, but will not control established weeds. Therefore, areas to be treated should be free of established weeds.


Is Pendimethalin Safe To Use?

Pendimethalin is considered of low acute toxicity. However, it has caused thyroid problems in male and female rats. Exposure to pendimethalin through diet is extremely low. So is the risk of cancer through this route. In addition, it has been classified as a possible cancer causing substance.


Although animal studies show that pendimethalin has a low toxicity, it is slightly toxic if you are exposed to it by eating or drinking contaminated food or water. It is also toxic if it gets in the eyes. Exposure is “practically” non-toxic if you breathe pendimethalin or if it is absorbed through the skin.


When using products containing pendimethalin it is imperative to wear the proper clothing, which you can find out by checking the product label. Pendimethalin  is considered "slightly toxic" if ingested, inhaled, or absorbed through the skin.  Handlers of the product are at risk for these kinds of exposures during mixing, loading, and spraying if the proper PPE (personal protective equipment) is not worn.

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