Trapaeolum speciosum: when is the best time to harvest these seeds for sowing myself from a mother plant given by a friend, as I don't want to try to did it up and risk losing it? Not sure how where I live affects the harvesting of the seed as assume it depends on "stage" seed is at, but live in very north (just this side of scottish border) of England. Seeds on my plant to date range from green (expect they are just forming) to purple/blue. A neighbour has been lucky (? I think so anyway) enough to have several seedlings appear around her garden, but not got any from seeds she has planted.
- 29 Oct, 2011