Any tips on how best to thin self sown annuals? I have a really thick patch of nigella and another of calendula. I ran a hand rake through the nigella when they were seedling size, but now both are getting away from me. Do I need to hand prick these to about a 2" spacing? Or just let them go and hope for the best? I get this with feverfew as well, but those seem easier to thin once they've got some bulk to them and sometimes I will actually transplant the thinnings.
