Gladiioli are a type of plant with spiky blooms that belong to the genus Gladiolus. They are perennial plants that are native to South Africa and have been cultivated for centuries for their showy flowers. The flowers come in a variety of colors, including white, pink, yellow, orange, and red. The plants can grow up to four feet tall and produce multiple spikes of blooms. Gladiioli are popular garden plants and are often used in floral arrangements.