Hi Michael, so nice to meet you. And how exciting to hear of the work you are doing in hybridizing. We would love to see photos if you have them?
I find the opaque milk jugs work the best, both in size and shape. But it would be worth a try to use other containers that are easy to find. Let us know how they work for you when you start planting seeds.
Let us give a call out to Kevin
@JungleShadows to address your other questions. He is the expert here at ATP on this process with our much loved sempervivum.
