This year I am trying a bunch of seeds of new species: orange dream and floating cloud maples (at least this is what the seller says). I have just a few of them germinated so far, but they do not make much progress (or do not make any progress) since germinated for one/two weeks comparing to the trident maples. So I am wondering if they may require special conditions like temperature, lighting or watering? As far as I could see, floating cloud may require partial shade -- does same apply to the starters? I currently apply strong artificial lighting for all new starters. The temperature is around 58F.