coolmen444 said:I planted 15 plants in cups. 5 of them are corn, 5 are marigolds, and 5 are watermelons. According to the package, they should all germinate 8 days at the latest. As promised, all the corn and marigolds germinated even a little early. It's been about a week now, but none of the watermelons have germinated, even though ALL of the other plants have germinated. I leave them outdoors and recently the highs have been about mid seventies and the lows have been about mid fifties. Why aren't the watermelons germinating?