Farmers are blue in the face from hearing about the importance of a suitable post-emergence spray to kill weeds, particularly seedling docks in newly sown grass swards. Failure to spray usually leads to a re-emergence of the weeds that were often a trigger to reseed in the first place.

The active chemical 2,4-DB was used where clover was sown in the sward as this killed the weeds but protected the clover – a win-win. Some of the well-known brand names which contain 2,4-DB are Underclear, Legumex DB, Clovermax, Undersown and Headland Spruce.