Best Time To Plant Gladiolus Bulbs.- October To December January.Blooming Start In 60 to 75 days after planting.Part of the iris family (Iridaceae) and commonly known as “glads,” these lovely flowering plants are available in a multitude of colors and sizes.Gladioli typically reach between 2 and 5 feet in height, sporting flowers that also range in size—from “miniature” blooms less than 3 inches in diameter to “giant” flowers greater than 5 inches across!
