GrazonNext HL Herbicide will treat thistle. The rate at which you apply GrazonNext HL Herbicide will depend on the specific type of thistle you are treating. If you are treating yellow starthistle, bull thistle, musk thistle, or plumeless thistle, then you can use 1.2 - 1.5 pints per Acre, which would be 0.44 - 0.5 oz per 1,000 square feet. For sowthistle, prickly sowthistle, Canada thistle, or Scotch thistle, you would use 1.5 - 2.1 pints per Acre(this is the same for blackberry), or 0.5 - 0.78 oz per 1000 sq ft. For spot treating with a 1-2 gallon sprayer, you would use the 1,000 sq ft rate in 1 gallon of water. For larger areas, the exact amount of water needed will depend upon your spray equipment and at what speed the product is applied. Please refer to the product label for complete application instructions.
GrazonNext should only be used on pastures and other areas approved on the product label, not on residential lawns.
No, per the GrazonNext label: Cereals and corn can be planted one year after treatment. Most broadleaf crops are more sensitive and can require at least 2 years depending on the crop and environmental conditions. Do not plant a broadleaf crop until an adequately sensitive field bioassay shows that the level of aminopyralid present in the soil will not adversely affect that broadleaf crop.
Per the product label: GrazonNext HL provides preemergence control of germinating seeds or emerging seedlings of susceptible weeds and re-growth of certain perennial weeds following application. When to apply depends on your application type, either as a pre-emergent (before seeds germinate) or post emergent application (anytime weeds are actively growing).
You may contact your local cooperative extension office to determine the correct timing of the application as this will vary greatly from region to region or search online for best time to apply in (your area) for weed prevention. A lot of universities have great articles for this.
GrazonNext HL Herbicide is not labeled to kill poverty weed/Roosevelt weed.
GrazonNext HL Herbicide is safe for applications to wheat grown for hay however is not labeled for millet or rye which are both varities bearded wheat.
Express Herbicide with Totalsol Soluble Granule could be an option as it is labeled for wheat (including durum) barley, oats and triticale.
Per the product label, these varieties can have different responses to herbicides depending on the region. It is recommended to contact your local University Extension Office or Department of Agriculture for advise on product recommendations and timing.
View the Express Herbicide product label for more information and find your County Extension Office HERE.
Certain insecticides may be combined with GrazonNext for application, provided that the mixing instructions outlined in the product label are adhered to. Please ensure that the insecticide is also approved for use in the same locations as GrazonNext and conduct a jar test.
