Once everything is dead, perhaps after a couple of weeks, you can proceed. While it is sometimes advantageous to cause weed seeds to germinate, it is important at other times to keep them quiescent long enough for the crop to get well established. The temperature at which you store your seeds is one of the most important factors.  Source: [url=http://www.testadsl.net/forum/viewtopic.php?id=10987]http://www.testadsl.net/forum/viewtopic.php?id=10987[/url]