What types of weeds will a fall application control?
Residual herbicides, such as Valor or Valor XLT, applied in the fall/winter can help control many winter weeds such as dandelions, chickweed, henbit and purple deadnettle. Additionally, residuals applied in the fall can help to control weeds, such as marestail, that develop strong root systems through the winter. Marestail that develops over the winter may appear to be small in the spring, but in actuality the root system is very large from growth throughout the fall and winter. This makes marestail very difficult to control in the spring.