If you have a large clump of Oriental lily bulbs dig a hole that’s wider than the stems above ground to avoid accidentally damaging the grouping of bulbs below ground. After a few years a single bulb can produce a decent size clump of bulbs like the one lily bulbs pictured above. This clump developed from a single bulb that I planted in my garden four years ago. You can plant the whole clump in a new location or separate the bulbs by pulling them apart.