QuestionsHow to growVegetable GrowingPotatoesspray weeds 0 Vote Up Vote Down James Byrne asked 15 years ago What type of spray can i use for weeds on potatoes planted about 3 weeks not up yet. I have 1/4 of an acre of them 1 Answers 0 Vote Up Vote Down Gerry Daly Staff answered 7 years ago You can use Basta which acts only through green foliage and not through soil.