close-up of vibrant euphorbia milii, crown of thorns, in natural sunlight highlighting its red blooms

euphorbia milii red thorns plant natural sunlight bloom flower macro crown closeup botany flora garden horticulture succulent spiky green bright vibrant ornamental tropical outdoor sharp decorative nature exotic detail colorful species foliage leaf petal shade stem environment growth landscape christplant poisonous beautiful evergreen durable perennial care cultivation pattern texture