It certainly could be done as Lorn says.
if there is any detriment, it would be enduring the multiple changes of sleep versus wake environmental directives. But since, Lilium bulbs never truly go dormant, I wonder if that is even a concern.
An interesting thought venue. Bluegrass, for instance, is prompted for summer dormancy by the environmental directive of heat and drought. It is harmful to go back and forth (dormancy and growth) multiple times during the growing season. It depletes the plant's stamina in several ways. Does this carry over for lilies in a significant way? I don't know. Certainly for any of your lily seedlings, Brian, that are still growing or
had senesced leaves but show signs of new growth, the query is irrelevant. These are still in, or have already "change" back to the growth stage. Continuing to grow them inside, given suitable conditions, will increase the bulb size and possibly shorten the maturity time (time to flowering). But I would say that whatever you decide to do will not significantly impact the health of these plants.
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Tracey, you cover them in the garage with a sheet like a bed sheet that is breathable? Then, I would have thought that it would be too bone dry for seedlings to sprout until watering is resumed.
