YOU don't have to start them ahead of time . I was told a few years ago from a great hybridizer that he never starts them inside . Too much cost and work load . I agree . This spring I planted directly into the prepared soil around 2000 seeds in MAY . I had over 50% germination , which was fabulous . I thinned them out and will have 700 strong seedlings to bloom over the next 2 years .