Answer: Sounds like you've found Papaver rhoeas, known as 'Flander's Field' or 'Shirley' poppy. It's a summer annual, grows 2-5 feet tall with flowers that are two or more inches across, either single or double, in colors that include red, pink, white, orange, scarlet, or salmon. There is another possiblility - Romneya coulteri or 'Matilja Poppy'. This plant grows up to 8 feet tall. The stems and deeply cut leaves are gray green, and the flowers (white) are like crepe paper and very fragrant. Try looking these plants up in a good garden encyclopedia and I expect you'll be able to tell which one you've seen. The seeds of both plants will germinate quickly when planted directly in good garden soil. The seeds for both poppies are widely available.
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