Seeds will germinate in less than ten days if conditions are right. Warm, wet, and flooded with light. If they don't produce a visible plant within 10 days, they need more light.
WOW! Thanks. That explains why I had no luck last year - not enough light.
Interestingly, I make the malt for Coors. Germination is part of the job. We germinate the grain for five days in our 48 beds.