Hi there Zoe, and
to NGA. So glad you found your way here.
Greg gave you great advice. All are tender succulents,
none are sempervivum.
In Greg's above post he talked about adding pumice to your potting soil, that would create a well drained mix for your plants.
They do look like they may not be getting enough light, so they are stretching up and out instead of staying more compact in growth. That would cause the "Christmas tree" look.
Hope we have helped you with information that is helpful?
