According to Wayside Gardens, poppies will grow at least 1 foot high. They have one flower per stem and are hardy in USDA Hardiness Zones 4 or higher. Poppies need full sun and well-drained soil. They can be planted as seed in the spring or bare-root plants in the summer.
According to Wayside Gardens, most poppies need a period of stratification, or a period of exposure to cold, before they will germinate. They are a favorite of butterflies, bees, and hummingbirds. Deadheading is optional for poppies, but it will prevent them from spreading. Their bloom season is relatively short. Poppies can be cut to the ground at the end of the summer. Poppies are usually drought-tolerant plants.