QuestionsHow to growLawnsWeedsLarge Lawn Weed Control 0 Vote Up Vote Down Siobhan Power asked 15 years ago My large lawn (aprox .6 acre) has clover, buttercups, thistle and others. Can you recommend a economical bulk weed killer or weed and feed. 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 6 years ago Go to a farm coop outlet and look for a weedkiller for grassland. Weed and feed is not economical over that area.