This Sago has been in the ground for 20 years. It now has 2’ of trunk. This is the best it has ever looked, in part because the mild winter meant no “bronzing” of the fronds from last year. It usually flushes each June (including here in ‘19).
It’s been quite an odyssey to care for it. I try to cover it periodically in the winter. But my experience is that not only will temps of 15 degrees F. or lower “bronze” the attractive, glossy, dark green fronds, but also freezing rain or sleet at temps of around 29 F. will also do them in. It’s just too much work to cover it when the forecast is in that temp range and there is a chance of precip. I lucked out this past winter.
I have seen a few in Charlotte, but none as big as this guy.