Posted: 23/06/2017 at 20:43
Sorry, but in my garden this is a seed weed of the first order. Comes up in its hundreds and has even changed colour in places. We must have thousands of them and they even survive being turfed out by the moles.
Seeds, if produced, are best sown fresh when slightly under ripe. Leave therm exposed to the weather and they should them germinate in spring. They take a few years to reach flowering size.