Ask-a-Dave's-Gardener: Gloriosa lily-sleeping beauties, 0 by vintagelily

vintagelily wrote:
The garden at our home had been dormant for decades as the house stood vacant for a very long time. After reviving the garden around the pool, these wonderful lilies popped out of the ground. Each year they come back a little more robust than the year before. This year they have taken over! I’ve accepted their gusto but need to control them before they suffocate everything else. Digging up tubers would be very tedious. Does anyone have recommendations? I’ve trimmed a few stems to the ground-not a real solution, just a quick fix.