I started growing Sinningia species (and hybrids) about 15 months ago. My experience is very similar to Janos'. I have lost plants to pests and/or neglect... but they resprout from the tubers. I'm growing Sinningia speciosa, S. tubiflora, S. sellovii, S. eumorpha, S. cardinalis, S. sceptrum, and a few others... In fact I should have S. cardinalis seed for the PBS BX soon. Some of my plants I acquired from the PBS BX. Others I obtained through Gesneriad Society events. (I'm growing lots of other gesneriads too... mostly South American species.) I really love the hairy fuzzy Sinningias but I'm not growing many of those yet. Dennis in Cincinnati