But that's not the only "bulb rule" these plants break.

They like dappled sun, not full sun like other bulbs, and they prefer moist soil. There are dozens of varieties with different dimensions and leaf patterns. Elephant ear bulbs are huge. These bulbs should be planted in late spring or summer once all chance of cold weather has passed.
Recall that these are tropical bulbs that only live through the winter (to bloom again the following year) in the warmest hardiness zones. Elsewhere, they can be grown as annuals or brought inside for winter. Plant elephant ear bulbs about 4 to 6 inches deep, spacing them between 2 and 4 feet apart depending on the mature size of the variety.
They need feeding too. Use a balanced fertilizer, like 20-20-20, twice a month during the growing season. Gladiolus are classic cutting flowers and a star of summer flower bouquets. But their tall spikes of colorful flowers also add life to the garden.