How deep should I plant gladiolus bulbs?
Planting depth varies with the size of the bulb (corm). Large corms should be planted 4 to 6 inches deep and 6 inches apart. Small corms should be planted at a depth of 3 inches. Gladioli require well-drained soils and perform best in a sunny location. Gladiolus bulbs normally bloom about 8 to 10 weeks after planting.