Surflan Pro Herbicide (Oryzalin 40.4%) - Questions & Answers

A pre-emergent herbicide such as Pendulum Aqua Cap would help with prevention but will not treat actively growing Japanese Stiltgrass. We would suggest a selective post-emergent such as Acclaim. Acclaim Extra is a selective post-emergence herbicide that controls annual and perennial grasses in turf including Japanese Stiltgrass. Please refer to product label for specific applications to your turfgrass.

Per the product label, reseeding should be delayed for at least 90-120 days following application of Surflan Pro. 

Surflan Pro Herbicide will prevent sandbur/goatheads but it will not kill any that are currently actively growing. It can be applied to established Bermuda. Please refer to the product label for complete applicatiton instructions.

 

Surflan Pro Herbicide can be applied in the fall to established Bermuda for preventing little barley. Please refer to the product label for complete application instructions including overseeding timing.

Surflan Pro Herbicide does not require a surfactant since it is a pre-emergent.  Surfactants are needed for post emergent herbicides as they help the product penetrate the waxy coating of the weeds.

Surflan Pro Herbicide is known to be pretty thick and will likely clog a hose end sprayer, so we do not recommend using one for application. The other problem with using a hose end sprayer to apply Surflan is that this type of sprayer sometimes is not very accurate, so you can wind up dispensing more/less product than needed in a given area, which can lead to less than desirable results.

Surflan Pro Herbicide will prevent sandbur/goatheads but it will not kill any that are currently actively growing. It can be applied to established listed turf in the spring and fall. Please refer to the product label for complete applicatiton instructions.

 

If you have applied too much of an herbicide such as Surflan, then the application is going to be less safe for the area, plus you can damage your desirable turfgrass or ornamental plants in the treatment area. The product will also take longer to breakdown in the soil, lengthening timing intervals for maintenance such as seeding and transplanting. Please be sure you are reading product labels completely before applying herbicides so that you are making correct applications.

Surflan Pro Herbicide (Oryzalin 40.4%) rates used depend on the length of control you are wanting as well as where you are applying and are not set per gallon of water but per area.  You will use 1.5 -3.0 fl. oz. per 1000 sq. ft.  Please refer to the product label for complete instructions.

It is recommeded to wait 90-120 days following the application of Surflan Pro Herbicide (Oryzalin 40.4%) to reseed or sod. The product label stresses that it is important that proper cultrual practices such as soil cultivation, irrigation and fertilization are done prior to reseeding or sodding. 

Applying Surflan Pro Herbicide (Oryzalin 40.4%) to newly sprigged or sodded areas of bermudagrass, St. Augustine, Centipede or Zoysiagrass before they turfgrasses are well established and have a well anchored root system can injure the turf. 

Per the product label, reseeding should be delayed for at least 90-120 days following application of Surflan Pro. 

Yes, Surflan Pro Herbicide is labeled for Annual Bluegrass. 

Surflan Pro Herbicide rates used depend on the length of control you are wanting as well as where you are applying and are not set per gallon of water but per area.  You will use 1.5 -3.0 fl. oz. per 1000 sq. ft.  Please refer to the product label for complete instructions.

Yes, Surflan Pro Herbicide is labeled to be used on a fescue lawn. You will use 1.5 -3.0 fl. oz. per 1000 sq. ft.

Those are both great products. Dimension has pre and post emergent control of crabgrass. However, we recommend first finding out exactly what type of turf and ornamental you are treating around. We do not want to recommend a product that will harm them. You can also contact Your Local Extension Office and speak with the Master Gardener on duty for advice on what is and is not working in your area.

The Surflan Pro Herbicide (Oryzalin 40.4%) liquid is orange in color.

The orange color of Surflan Pro Herbicide (Oryzalin 40.4%) is a trademark and cannot be taken out. We apologize we do not have a liquid Oryzalin 40.4% product without the colorant.

The application rate varies depending on what you are treating for and what type of turf grass you have. Are you referring to Opti Amine? For Surflan Pro you will need to use 3 fl oz of product per 1-2 gallons of water for 1,000 sq ft. The water in this case is just a carrier and you need to use enough water to make sure you get even coverage and to make sure you are getting the correct amount of product over the 1,000 sq ft area. There are directions on page 7 of the Surflan Pro product label that explains how to properly calibrate your sprayer. 

We will need more detailed information on the type of garden you will be planting and when to be able to offer a specific product for your application. Please contact us at 866-581-7378. We will gladly assist you with your selection. Thank you!

The best time to applying pre-emergents vary from region to region. In Nebraska, the best time to apply a pre-emergent like Surflan Pro would be from March to May (Spring) and from August to November (Fall). Please take a look at our Lawn Care Schedule for more timing applications for a full lawn care program. We also recommend contacting your Local Cooperative Extension office for the best time to apply pre-emergents in your county.