The message
from Hussein M. contains these words:

I also suppose that the best time to
sow any seed in situ is that time when the plant seeded to produce the
seeds.

Well...no, it isn't, especially in areas which have cold or wet
winters. Autumn-sown open ground seeds usually have far lower
germination and poorer survival rates than the same seeds properly
stored, then planted in the same place in Spring. Seeds in open ground
do better when soil is warming up not cooling down, and when daylength
is lengthening not shortening.

Janet.