Palm growth in the fall/winter

[Ben F.]

Hi all, I was curious about palm growth in the fall/winter. I'm in Southern California, zone 10a/b, it doesn't get much colder than upper 30's in the late fall/winter, typically not warmer than lower 70's during the day. I was curious about how palm trees grow during this season, specifically Queen palms. From what I read, they are still growing, but once the soil gets colder, not as much?

I've noticed more palms around this area, including mine, seem to be doing the nutrient pulling from lower fronds (more yellowing), while still growing new fronds. Is there something about this time of year that makes palms use more of their own fronds, rather than nutrients/fertilizer in the soil? Or could these be symptoms of summer (perhaps under-watering during hotter temps) showing now, or is it just seasonal?