Good morning, I grew a number of Sinningia tubiflora from seed from the BX. They were propagated in my all season greenhouse . They thrived vegetatively and offset copiously. None bloomed neither did I experience the heights described recently. Most of the tubers were donated to the BX this year. Since, I have learned they need cold to bloom and are reported to be hardy in USDA 7. Thus, no more coddling and cosseting--out they go. Best, Joyce Miller, Gresham, OR USDA Zone 7 where we have broken the record for June average rainfall and it is barely past the mid-month.