Glaucium Species, Horned Poppy, Sea Poppy, Yellow Horned Poppy

In North America, this species has naturalized in 15 states and one province.

In my state, it is illegal to buy, sell, pla...Read Morent, or transport this species, because of the damage it does to natural areas (mostly shoreline).

What a good plant for dry areas. Mine was slow to start, probably because I bought it in a pot and transplanted it. However when it fin...Read Moreally bloomed it was an attractive yellow flower. The seed pods are the kick though, very much like a California poppy seedpod, but these are humongous! A good 6" on my spindly first year transplant. Looking forward to more plants this spring.

Horned poppies do very well in Denver, Colorado. We see shades of yellow, orange, and nearly-red. I can't imagine where it is "grown ma...Read Moreinly for its foliage," as a previous post indicates. Last year I had a big display well into the hottest part of the summer (temps over 100 degrees), at which point the whole plant, including basal leaves, sort of retreated for a couple of weeks. We cut away the browned-out leaves and flower stalks, and soon had a whole new plant with a lush base and big display of blossoms. This lasted well into the cold weather. Usually, though, the plant just blooms all summer long. I deadhead as I can, but not very regularly. My current plant makes 2" seed pods, whereas my previous one made foot-long, curved pods – "horns."

The right place for this plant: for me a very well drained, north facing slope, yields a great display. The substantial but brittle leave...Read Mores are bright gray/white with a great rippled edges. The flowers are a poppy-like texture, clear orange in color. Very difficult to transplant, easily reseeds. Great addition. Looks striking with black mondo grass (Ophiopogon japonicus) - texture and color!