I usually don't do anything to my crinum after they bloom. Sometimes they will send up another scape when you least expect it. Some of my crinum clumps have gone at it like gangbusters this yr, sending up rebloom after rebloom.
Name: Glen Ingram Macleay Is, Qld, Australia (Zone 12a) (Lee Reinke X Rose F Kennedy) X Unk
My Crinum X powellii are flowering. I only solved the problem of the moth Brithys crini last year. It just devastates Crinum, particularly this one: the cats burrow into the leaves and bulbs. My present ones are only now making a comeback. Pray the moth doesn't come your way.
Gosh Glen you can keep that critter. My crinum are pretty well pest free and I would like to keep it that way. They take up a lot of room but reward me with plenty of bloom and rebloom.
It's Melissa La Branche, a Tom Wilson hybrid. His cultivars have some of the thickest substance, you want to take a bite out of them. I have 7 of his so far, the most popular I have seen is Magic Lace.