Extended Periods of Colder Temperatures Will Shut It Down
I have Snow Flurry which is another one of Ackerman's hybrids. I believe the parentage is C. oleifera and C. sasanqua. It is probably very similar in cold-hardiness to what you have. The problem with opened camellia flowers is that they will be damaged when the temperature drops below freezing. Unopened flower buds will be fine, to a point. However, repeated drops into the low twenties and teens will shut the flowering process down and the rest of the flower buds will not open later.
I have a couple of fall-blooming camellias that have been in the ground for well over a decade. If you have a couple of brief episodes and the weather moderates for an extended amount of time, then the unopened blooms will open.
My Snow Flurry
Damage to opened flowers after a brief drop to 30 degrees early Saturday morning
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