My best guess is you planted too early - or the seeds dried out. But if your nights have been cold - under 50 degrees it is possible the seeds are just lying dormant until the soil warms and they will sprout soon. Try this - sprinkle some seeds on a damp paper towel, place in a jar and see how soon they sprout. If they sprout indoors but not outside the fault is not the seeds, it is the cold soil or dry soil. Seeds are cheap, sow, sow and sow again. Keep growing, Marianne Binetti