I sowed mine the third week of March this year; many plants appeared, they bloomed early, and onward through July. I even had a few late plants bloom in the early part of August.
I don't have results as good as this if I plant these types of seeds in fall. Not sure if the critters eat the seeds, they get washed too deep by late season rain (or snow) or what, but I generally have very few pop up the following spring.
Maybe toss out a few now, then sow the rest in early spring. (?)
