They are greatly different even though they both originated in the Mediterranean region. The Opium poppy has no narcotic properties and may be grown anywhere, but cultivation of the opium poppy is strictly controlled in the United States as well as in many other countries. There s no such thing. If you want a long show you must plant several different kinds of perennials for a succession of blooms. You ll need to plan it so when one fades out, another comes into bloom.
Wildflowers are easy from seed.
If seed is to be spring planted, first find an area that receives full sun most of the day. Remove the weeds. Rough up the soil to a depth of not more than two inches. Evenly apply the seed you have purchased over the prescribed area being careful not to plant too much seed on a small plot. Follow the planting recommendations included with your seed.