Oxadiazon

Annual broadleaf and grassy weeds can be annoying to deal with year after year when trying to keep a uniform lawn or landscape. Oxadiazon is an active ingredient that can serve as a pre- and post-emergent control of weeds.

On this page, we will share some brief info about Oxadiazon, its mode of action, and why it is so effective. You can also use this page to shop our top recommended products containing Oxadiazon.

What is Oxadiazon?

Oxadiazon is a herbicide used for pre-and post-emergent control of a wide variety of annual broadleaf and grassy weeds. Oxadiazon is a member of the oxadiazole chemical family of herbicides. Oxadiazon has been used to treat weeds mainly in commercial settings, such as golf courses, athletic fields, playgrounds, roadsides, and industrial sites. In addition, Oxadiazon has also been shown to be effective on sod farms, ornamentals, vines, and trees. 

How Does Oxadiazon Work?

Mode of Action

Oxadiazon controls weeds by inhibiting an essential plant growth enzyme known as protoporphyrinogen oxidase, or "protox," for short. This inhibition hinders the plant's usual developmental functions and breaks down tissues.

Benefits of Oxadiazon

Oxadiazon can deliver season-long control of unwanted broadleaf and grassy weeds in just a single, pre-emergent application. Oxadiazon applications will not hinder turf root growth or recovery, making it ideal for spring application. Its application will not damage your ornamentals.

Drawbacks of Oxadiazon

Oxadiazon is not intended for use on residential lawns, and products containing this active ingredient are not available to homeowners.

Is Oxadiazon Safe?

Oxadiazon is safe to use when applied according to label directions. When handling Oxadiazon, use proper personal protective equipment (PPE). Keep all people and animals away from the treated area during and after application until dry. Spray in calm conditions to avoid drift.

What To Expect

It is important to apply Oxadiazon at the right time before target weed seed germination. Make sure to water the area immediately after application or apply before rainfall. It is also best to eliminate existing weed growth before application to ensure the spray reaches the soil surface. A repeat application can be made four months after the initial application, with a maximum of two applications a year.

Featured Products

Oxadiazon SC— is a fast-acting pre-emergent herbicide designed to control annual grasses and broadleaf weeds in turf, nurseries, and ornamentals. It is not meant for use on residential lawns.

Oxadiazon 2G Pre-Emergent - is a pre-emergent herbicide designed to selectively control various types of annual grasses and broadleaf weeds without harming turfs, ornamental shrubs, or trees. This herbicide is effective against Carpetweed, Crabgrass, Barnyardgrass, and more.