How deep should Lily corms be planted?

Question

Zone 4, Checkered Lily, East-facing foundation garden.

Answer 1

As a general rule, plant bulbs two to three times as deep as they are tall.

Here's more:

https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/planting-flower-bulbs-in-zone-4.htm