Bulb planting depths vary depending on their size and species; but as a rule of thumb, most bulbs can be planted at a depth of approximately 3 times their own height. This explains some of my frustrations!
Plant your gladiolus bulbs as soon as the ground is soft enough to work with. Plant your bulbs 6 inches deep in your garden and cover it halfway with loose soil. This will allow it to get extra warmth from the sunlight. After the temperature begins to warm up and the spring weather is consistent, cover the bulbs completely. Depending on the size of the bulb, plant them between 2 and 7 inches apart.
Gladiolus Bulbs Blue Moon Mix, along backyard border next to house, with Dahlia "crazy love" and "firecracker flower" . mixed with Lily "Golden lily of Japan" Gladiolus - Spring Bulbs from American Meadows
I purchased 130 gladiolus bulbs last week. Gladiolus are one of my favorite flowers to grow in the garden for cut flower arrangements. Plus, while 130 seems like a lot, when you spread them throughout the garden, it really isn& all that much.