Apply in warm weather when weeds are actively growing and soil moisture is adequate for active plant growth. Consult label for crop rotation restrictions before using product. Several crops may be injured up to 4 years after application. Do not permit dairy animals or meat animals being finished for slaughter to forage or graze treated grain fields within 1 week after treatment. Do not harvest hay from treated grain fields.
Labeled rates vary by crop.
For Canada thistle, apply after majority of basal leaves have emerged but prior to bud stage. For most effective Canada thistle control, apply as a broadcast treatment to the entire infested area. Consult label for crop rotation restrictions before using Stinger. Several crops may be injured up to 4 years after application of this product. Consult labels for registered use sites.