Iceland poppy is not as hardy as its name implies. It is used extensively in the southeast, since a fall seeding will create a lavish spring display, but the plants are unable to live through the hot summer that follows. It is also used as a favorite bedding plant in California. In colder climates, it performs like a perennial for two or three years. Seed is tiny, like most poppies, so sow carefully and use minimum or no covering. Compressing the seed into bare soil it the best method.