Ok, so far I've done extremely well at propagating P. primuliflora, but now with my new warm temperate pings (P. lutea, P. iontha, P. plainifolia, P. caerulea) I would like to try and propagate them as well. I've tried leaf cuttings with P. lutea unsuccessfully, so I guess that they aren't able to be propagated in that manner (or are they and was I doing it wrong), is that the same with P. caerulea? What about P. plainifolia and P. iontha?