YVW Mike!
Yup, be very careful with the kids Mike ~~~ some real dangerous stuff if they decide to eat it or even crush a leaf & then put their hand to their mouth ~~~ also applies to pets. Frankly, I never brought mine inside even when it was going to freeze. They were on the front porch (roof over) & if it was going to freeze I would put a string of Xmas lights on them & then I would cover them with a blanket. The built up heat in the concrete slab, the roof overhead & being against the wall of the house all combined with the lights & blanket keep them warm enough. When we had freezes it was never freezing for 6 or 8 hours anyway ~~~ maybe it got to freezing for 1-3 hours.