Ключевые слова: arizona, barrel cactus, blooming, blooms, blossoms, botanical, botanical garden, botany, cactus, desert, desert botanical garden, flora, floral, flowering, flowers, garden, grow, growth, hatpin, hatpin barrel cactus, landscape, natural, nature, needles, outdoor, outdoors, park, plants, red, scene, scenic, tucson, vista, yellow,