Cj from Monroe, Ny writes
It's end of June in southern NY. It's been a cool spring.
Tupersan 50 WP is a pre-emergent herbicide that should be applied when the soil temperatures are around 55 degrees and prior to the emergence of the weed you wish to eradicate. After the seeds from weeds have warmed up they germinate rendering the pre-emergent applications useless. If you are past this point, Post-emergent weed control applications will need to be used.
Answer last updated on: 06/28/2017