Farming Q&A: Weeds reduce grass yield and prevent grazing

Deal with docks, thistles, buttercup, nettles, furze

In late summer, when is the best time to spray for docks in grassland?

Spray docks when they are actively growing in the summer months when they are free of disease, pest attack, drought etc, with nutrients being translocated to leaves, stem and roots of the actively growing dock plant.