Gladiolus
Gladioli grow from round, symmetrical corms (similar to crocuses) enveloped in several layers of brownish, fibrous tunics. Their stems are generally unbranched, producing 1 to 9 narrow, sword-shaped, longitudinal-grooved leaves enclosed in a sheath.
Gladiolus can return year after year, but their hardiness depends on your climate. In warmer zones (8-10), they can stay in the ground, while in colder zones (3-7), you'll need to dig them up and store them over winter.
Caladium
Caladium is a genus of flowering plants in the family Araceae. It includes seven species native to South America and Central America and naturalized in India, parts of Africa, and various tropical islands.
Caladium is intolerant to low temperatures or prolonged absence of water. After a while without water, its leaves go dormant and droop. It prefers a moderate, shady place with indirect sunlight, high humidity, and a well-structured watering schedule.
Dahlia
Dahlia is a genus of bushy, tuberous, herbaceous perennial plants native to Mexico and Central America. It is a member of the Asteraceae (synonym name: Compositae) family of dicotyledonous plants. Its relatives include the sunflower, daisy, chrysanthemum, and zinnia.
Dahlias grow naturally in climates that do not experience frost (the tubers are hardy to USDA Zone 8). However, their tuberous nature enables them to survive periods of dormancy, and this characteristic means that gardeners in temperate climates with frosts can grow dahlias successfully, provided the tubers are lifted from the ground and stored in cool yet frost-free conditions during the winter.
Canna
Canna or canna lily is a genus of flowering plants consisting of 10 species. It is the only genus in the family Cannaceae. Cannas are not true lilies, but the APG II system of 2003 assigned them to the order Zingiberales in the monocot clade Commelinids, together with their closest relatives, the gingers, spiral gingers, bananas, arrowroots, heliconias, and birds of paradise.
Cannas grow best in full sun with moderate water in well-drained, rich, sandy soil. They grow from perennial rhizomes but are frequently grown annually in temperate zones for an exotic or tropical look in the garden.
Calla
Calla is a genus of flowering plant in the family Araceae, containing the single species Calla palustris (bog arum, marsh calla, wild calla, squaw claw, and water-arum). All species are endemic to central and southern Africa, from Nigeria to Tanzania and South Africa
Callas produce large, showy flower spathes and are often grown both as ornamental plants and for cut flowers. They are relatively hardy plants, but some are more winter-hardy than others. They grow naturally in marshy areas and become deciduous when water becomes scarce.
Lily
Lilium is a genus of herbaceous flowering plants growing from bulbs, all with large and often prominent flowers. Lilies are a group of flowering plants important in culture and literature in much of the world. They are tall perennials ranging in height from 1 to 6 ft (30–180 cm).
Lilies are usually planted as bulbs in the dormant season. They are best grown in a south-facing (northern hemisphere), slightly sloping aspect, in sun or part shade, at a depth 2½ times the bulb's height (except Lilium candidum, which should be planted at the surface).