Thanks

Formally have to be sent with soil (for so in a pot or phitocell, however I've experienced the sending to a foreign land of an orange (evergreen also) tree bare roots, with only a page wetted of newpaper in the sealed plastics sac with the roots, and it survived.
This of course is not a rule for commercial trade, but is possible for friend trade, not commercial, less expensive for postal costs.

The main risk in winter is to have too much heat, and not many light (*), this produce the "pale elongation" of branches; negative for the fact that them runs out of space in the pot, and in the room, but mainly because it is more risky then put the plant outdoors, and place it outdoors is important for its flowering and vegetative growth.
The short summer is another unknown factor because the ripening in October or November is according to an early spring.
The plant normally has a period of "dormancy" in summer very hot and arid climates, where nearly stops the growt, without losing its leaves.
This however increases the amount of accumulated heat and light for the amount of fruits and oil, but not for the quality of these, which are best in cooler climates.
In cool climates the production is modest, but are even more rare the damage caused by parasites, in cold areas, as may be in the Carolines (I suppose), but very well drained, the product would be optimal.

The plant bears much less moist soil than does the fig tree, and usually die from fungal infections at the roots in very wet or flooded soil.
The natural condition is a slow growth, if it grows or is made ​​to grow faster, are at risk for many reasons.

(*) the appreciation of light by humans is subjective, is not bsed on instrumental, the humans have two two distinct systems of vision, a vision but with low efficiency and high-definition color well during the day and with much light, and a second acting with different visual systems at night with high efficiency but with poor quality in low light.
This lets us make mistakes in evaluating the light, for example in gardening, but also for other problems such as vision "twilight" when driving a car, and you see worse at dusk or dawn than at night, when "the strange light" does not give you a good view, both systems are not the optimal.
The plants does not have a different system to collect the wattage of light.

Olive is NOT ABLE to go in complete dormancy.