(Herb) Eating it in a dream means receiving a comfortable income. Seeing the lights of its showy flowers in a dream means flags and banners. (Also see Flag)
Dream dictionary: Poppy dream meanings
…Poppies seen in dreams, represents a season of seductive pleasures and flattering business, but they all occupy unstable foundations. If you inhale the odor of one, you will be the victim of artful persuasions and flattery. (The mesmeric influence of the poppy inducts one into strange atmospheres, leaving materiality behind while the subjective self explores these realms as in natural sleep | yet these dreams do not bear truthful warnings to the material man. Being, in a manner, enforced.)…
…To dream the object of one’s affections is clothed in light blue or yellow signifies they are fickle; in dark blue or gold, that they are constant. To present to or receive from the object of one’s affections, or to see him or her wearing a convolvulus, yellow rose, poppy, or daffodil means he or she is inconstant. On the other hand, if in the place of these flowers are buttercups, white roses, or sweet peas, it means he or she is true. To dream one is kissing one’s sweetheart portends inconstancy on the part of the dreamer; to dream one sees one’s sweetheart kissing, or being kissed, by someone else, foretells the inconstancy of the one dreamed about:To dream one is dancing with the object of one’s affection means that the latter is, or will be, guilty of carrying on a flirtation with someone else. To dream of…