Most seem to be prepared to be self-pollinated, but as always it would probably be desirable to cross two different clones. The seed will take several months to ripen. Eventually when the capsules ripen, they split to reveal the seeds within. These are often almost as decorative as the flowers, as they can be brightly coloured. The seed can either be sown immediately or dried carefully and cool stored for later use.
Seed is easy to handle, being spherical and diameter of several millimetres.
The seed does not seem to need any special triggers other than temperature and moisture to achieve germination, so cover the seed with its own depth of compost. Some species will germinate in warmth, but most seem to germinate as temperatures become cooler in autumn and early winter. However, keep an eye on all pots as even those preferring the latter regime may throw the odd seedling at any time in spring and summer. The best time to sow seeds is probably late summer. However, if left too late, the seeds may well fail to appear until the following autumn.