Winter Packages Wild Annual Seeds Survive The Winter, But 'packaged' Annual Seeds Must Wait Until Danger Of Frost Has Past??

Wild annual seeds survive the winter, but 'packaged' annual seeds must wait until danger of frost has past?? - winter packages

I understand that the seedlings can withstand hard freeze after they have started to grow, but what is the annual seeds, of course, fall to the ground in autumn to survive the winter and go without the ability working?