Author: Annie Klodd, UMN Extension Educator, Fruit and Vegetable Production Sandea injury symptoms on a pumpkin leaf. University of Kentucky. A question came in last week about if and how the herbicide Sandea can injure pumpkins. I consulted with Dr. Sushila Chaudhari at Michigan State University, as well as the Sandea label, to answer this question. Sandea (halosulfuron) is an herbicide registered for pre- and postemergence application in pumpkins and numerous other crops. Sandea has efficacy on a number of broadleaf weeds including pigweed, ragweed, velvetleaf, mustards, nutsedge, lanbsquarters (preemergent), morning glory/field bindweed (suppression). It is an important option for pumpkin growers, since few other effective broadleaf herbicides are labeled in pumpkin. However, pumpkins and squash are also broadleaf plant species that can be injured by Sandea under certain conditions. Therefore, care must be taken to apply it successfully. Use research-based university recommendatio