Advice on wintering capers and/or olives indoors? More in comments

Hi All,

First year with olives and capers. I live in a region where they're barley happy in the summer and definitely wouldn't survive the winter outdoors.

I knew that getting into it, and have space set aside for them. I also have grow lights that probably do better than what they got during the summer. So my question is, what kind of environment do I give them so they think it's winter?

Like I said, if I crank the grow lights I wouldn't be surprised if they flowered over winter, and I don't want them losing track of the seasons (unless they don't really care).

Any tips?