Hi Mary-Sue and Jamus, I have had reasonably good germination with a number of Tropaeolum species after autumn sowing with seedlings appearing from late winter . I have even had success with T azureum which flowered over the last couple of years then sulked after repotting this year. T brachycerus performed at its best in the year of germination but has put on much lesser floral displays in the subsequent two years. I have a single flower on T sessiliflorum at present which is a first. Several other species are yet to bloom. T tricolor seems to be the most reliable performer for me. I grow them all within my shadehouse which has lattice walls for climbers to grow on. I have them all in pots at this stage but wonder if they may perform better in ground. Cheers, Rob in Tasmania Zone 9 equivalent