Anyone have any advice on sowing seed of Viola corsica? My parents and I have been growing it for years and it self-seeds, but whenever I've tried collecting seed and deliberately sowing it, I've had very poor or no germination.
I'm assuming immediate sowing, not allowing the seed to dry out, is advisable and shallow sowing, only just covering the seed. But does anyone have any other suggestions for what might work best? Would storing the seed of this one and sowing in winter work better? Or surface sowing, or what? Any ideas (and any suggestions for success with viola seed generally) most welcome.