I applied 2,4 D this past weekend for onions, etc. I have other weeds that will need MSMA. When can MSMA be applied? I've heard that it needs to be hot (summer) to work. Is this true? I also want to overseed (bermuda). When should this be done? I was wondering if I could do it soon to take advantage of the April showers. After overseeding how long does one need to wait before applying MSMA? I have about 2 acres to overseed.