I sow seeds or at least spread them out in the garden when that type of plant is
naturally spreading its own seed. In other words, for Texas bluebonnets, I
spread the seeds in late spring, then again when the fall rains start for
insurance. A pound of poppy seed? That would probably populate an acre,
adequately!

Here's what you do. If these are native wildflowers in your region, plant some
in the fall, and some in the spring as the rains start in. Keep a record of
what started first and go from there.

I always spread seeds of the wildflowers when they naturally spread on their
own...and, as I said, I do another sowing in late fall when the rains start. I
live in south central Texas.

Find out exactly what type of poppies and other plants you want to grow and do
some research on www.google.com for the particulars of cultivation from seed.