Gary from Washington writes
Pin Dee 3.3 T&O Herbicide can be tank mixed with other products such as RoundUp following all instructions on each product label. Do not apply tank mixtures containing glyphosate over the top of ornamental plants. Before tank mixing, a simple jar test is recommended to insure compatibility of herbicides. Always read the companion product label. Follow all use precautions and restrictions that apply to each product used. Always follow the most restrictive label.
Answer last updated on: 02/08/2019