Posted: 31/01/2016 at 18:23
Maybe a little more control, if you take the seed when ripe and sow it in pots with gravel on top rather than let them drop, with weed seed, onto the seed tray. Pots are better than seed tray, more depth.
I'd transplant them very early from the gravel, as soon as there are true leaves. Gravel is a wonderful medium, I rely on it a lot