So I came across a gorgeous red & yellow flowered Alstroemeria at Lowes. Unfortunately, it is only hardy to zone 7 and it would be quite expensive as an annual. (In Lowe's defense, they did place them in their annuals' section.) I would love to have it on my balcony (unobstructed SE exposure, 3rd floor -- so full sun from around 8am-2 or 3pm). But the only way I could even consider that expense would be if it was easy to overwinter indoors as a tuber in my apt. If it is possible to do so, what kind of dormancy conditions would have to be provided? Can it be overwintered as a "naked" bulb?

And for that matter, do Alstroemeria bloom profusely enough throughout a summer to even make it worthwhile from that standpoint?