good point Tim...
my varieties are: Roma VI (or is it IV?), Christmas grapes, black plum, yellow plum and berner rosen.
Grown in two-inch pots with multi-purpose peat-free compost, covered with plastic bottles. Placed on living windowsill (warm and sunny) during the day and on the floor over night (it's warmer away from drafty windows). Once germinated, placed on kitchen windowsill - still bright, but slightly cooler.