#ornamental gardening
- Aquilegia caerulea — A species of herbaceous perennial plants in the genus Aquilegia, native to the Rocky Mountains of North America; this structural plant features large, spectacular, typically bicolor flowers (with white petals and blue sepals), being declared the official state flower of Colorado and frequently used as an ecological symbol and luxury decorative plant.
- Aquilegia vulgaris — The type species of herbaceous perennial plants in the genus Aquilegia, native to Europe and widely utilized as an ornamental plant in gardens; this structural plant possesses spectacular flowers with a diverse chromatic palette (ranging from blue, violet, and pink to white), being popularly known as 'columbine' and intensely studied due to its biochemical and genetic properties.