Thanks to Steven for the advice. Give your dogs a cookie from North America. Since I first wrote the one plant has put up 4 inflorescences and the other none. They are in identical glazed ceramic containers (well, the one blooming is in the deep blue container and the other in the celadon blue.) The one blooming is in a light, porous mix of pumice, perlite, potting soil and a touch of local soil, while the one not blooming is in my heavy local silt. It appears every flowers is producing fruit - are these likely to be fertile, since there was no cross-pollination? Leo Martin Phoenix Arizona USA