Like the magnificence of the setting sun, Crown of Thorns Sunset Splendor has radiant hues of light and dark orange to captivate all who see it. The large 1-2 flowers often grow as doubles if the plant is in favorable conditions. It thrives on a sunny windowsill or grow it outside during the warm summer months. Euphorbias are indestructible houseplants. Be sure to let the soil dry out between waterings.