Ronstar G - 50 lbs.


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4.5 out of 5 stars Rating: 4.4

5 Reviews | 9 Q&A


{ $137.95 { $136.02
  Size/Description Price/Ea. Qty
Ronstar G - 50 lbs. bag (50 lbs)

Buy 1: $137.95 each

Buy 2 or more: $136.02 each

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Ronstar G - 50 lbs.

Ronstar G is for commerical applicators only.

Ronstar G is a pre-emergent herbicide that controls a variety of annual broadleaf and annual grass weeds. Offering a conducive environment for sprigging, Ronstar controls weeds through their shoots rather than their roots, so it won't harm turfgrass roots in the process. In fact, Ronstar can be used for long residual pre-emergent weed control even in areas that may need to be sprigged or where turfgrass roots are already weakened due to pest, mechanical or other damage.

Q: What's a DNA? And what makes Ronstar's mode of action unique?
A: Dinitroaniline (DNA) herbicides control weeds by halting root growth. But these products don't distinguish between weed roots and turf/ornamental roots, so they can inhibit turfgrass and ornamentals in treated areas. Another problem with these products has been herbicide resistance by goosegrass. Ronstar, on the other hand, contains the active ingredient oxadiazon, and is not in the DNA chemical class. Ronstar controls weeds through the shoots, not the roots. It does not harm turf and ornamental roots and is effective against DNA-resistant goosegrass.

Q: Is Ronstar effective on goosegrass and crabgrass?
A: Yes. However, it must be applied prior to emergence. Ronstar's performance is not significantly affected by temperature, and it will not lose its effectiveness if it's applied early. In fact, the opposite is true—an early application ensures excellent crabgrass and goosegrass control.

Q: Does Ronstar control Poa annua (annual bluegrass)?
A: Yes. Just one application of Ronstar provides control that's equal to or better than other products registered for use on Poa annua.

Q: What's the best way to ensure effectiveness after Ronstar is applied?
A: Thoroughly water the treated areas soon after it's applied. Water only the soil and don't incorporate the chemical by raking; Ronstar works best when the soil surface is not disturbed.

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  • 13 of 16 people found this review helpful:

    2 of 5 stars  application rate
    By Bob in Eugene, Oregon on 02/12/2013

    Might be good to indicate the square footage this 50 Lb. sack will cover?

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  • 3 of 9 people found this review helpful:

    5 of 5 stars  my purchase of Ronstar G-50 lb. bag
    By Thomas in San Antonio Texas on 03/09/2012
    Verified Purchase

    All my orders were recieved very fast. They were shipped Free. Thanks for this service.Good job.

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  • 3 of 7 people found this review helpful:

    5 of 5 stars  Recent orders all 3.
    By Thomas in San Antonio Texas on 03/28/2012
    Verified Purchase

    This is a very good company to do business with. The items were shipped very quickly. all arrived with in 3 to 5 days . The shipping was FREE.Thanks for the great service.

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  • 3 of 8 people found this review helpful:

    5 of 5 stars  Feedback on order
    By Thomas in San Antonio Texas on 04/15/2012
    Verified Purchase

    I recieved this item very fast. The item was just as advertised. Thanks for the great service.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Rostar G
    By Dave in CA on 03/02/2017

    Best product on the market and will use again for sure!!!!!!!!!!

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04/14/2011 Jennifer

QIs Ronstar G toxic to pets and children?
If so, how long should the treated area be off limits? If the product was to enter a water source such as a pond, is it toxic to the fish?

ARonstar must only be used by commercial applicators and cannot be used on residential turfgrass. Applicators can apply Ronstar to landscape beds in residential areas. After the product has been applied, people and pets must wait until after the product has been watered in before they return to the treated areas. Ronstar is toxic to fish and other aquatic animals and should not be used in areas where runoff or direct application could enter the water. For more information on Ronstar please read the Ronstar Product Label.

17 of 22 people found this answer helpful.
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02/04/2013 Susan from Las Vegas, Nv

QHow many square feet does one 50lb bag of Ronstar cover?

AThis will really depend on what you are treating for. In general one 50 lb bag will cover 11,000 sq ft - 22,000 sq ft. You can review the Ronstar product label to find the usage rate that fits your needs.

11 of 11 people found this answer helpful.
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07/23/2011 Stan

QIs there any product that will neutralize ronstar? ( or pre-emergent weed ?)
We have a small dog & he developed a liver problem. How can we prevent recurrence?

AWe suggest you direct your question to the manufacturer.  The manufacturer is Bayer and they can reached at: Product Info Line: (800) 331-2867

4 of 6 people found this answer helpful.
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01/27/2012 Wes from Fred., Va

QWhen should Ronstar G be applied in Virginia in the spring (what month)?

AThe application of Ronstar G will completely depend on the type of weeds you are trying to prevent and the type of grass you are applying the product on and of course your location. We recommend that you contact your local cooperative extension office and speak to the master gardener on staff. He/she will be able to tell you the best time for the application as he/she will know when the weeds germinate in your region.

1 of 5 people found this answer helpful.
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08/13/2015 Georgetta

QWhy can't Ronstar G be used on residential lawns?


Ronstar G  is labeled for commercial applications only and not for residential use by the manufacturer. 

1 of 7 people found this answer helpful.
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07/13/2015 John from Newport Beach

QCan Ronstar G be used in planting areas that have succulents planted, such as aeonium, agave, or aloe?


Ronstar G cannot be applied in areas with succulents. You may call us at 866-581-7378 for assistance with your particular situation.

1 of 1 people found this answer helpful.
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09/11/2013 Scott from Davie Fl

QCan I use Ronstar G - 50 lb. Bag for the control of Pilea microphylla?

AYes, Ronstar G will control Pilea microphylla. In fact is is one of the best products on the market to do so. Please be sure to review the product label before application.

0 of 1 people found this answer helpful.
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10/15/2016 Kevin from Ca.

QHow much water is sufficient when watering in Ronstar G - 50 lbs.?
How much water is required/sufficient to water this in? Will product still be visible on the surface of the dirt if properly watered in?


Be sure the you irrigate at least 1/2 in of water after†Ronstar G - 50 lbs.†application. The water will activate the granule, and then it should no longer be visible.†

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05/02/2016 Paul from Nokesville, Va

QCan Ronstar be used on flower beds with a mix of flowers including perennials and annuals: lilies, zinnias, marigolds, asters, dahlias, verbena, roses, etc??


Ronstar G - 50 lbs.†is labeled to be used in Commercial Landscapes and Nurseries. For Residential and Commercial treatments.†Bonide Grass Beater Over the Top†works great in residential and commercial flower beds, and other landscaped areas without harming the labeled as tolerant plants.

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