Alan,
Why don't know if this would be any help, but...
Try it the three different ways.
One in a pot in your basement, one on a side raised bed right at the base of your house with
a southern exposure and one of the other ways
discribed!!
It always breaks my heart to see a
plant pass,
but if you don't experiment you may never know.
You are a
zone 7 too aren't you??
You have alot more going for you
zone wise.
Micro climates are very valuable.
Though it must be kept in mind that not ALL
winters are created equal some are harsher than
others. But as long as you have a good insulator on top, I'd give it a try.
Don't yell at me if they die though,
I don't want that on my shoulders
(BIG GRIN)
But ya just never know,
I kept reading on those several articles,
but I don't remember actually reading what
zone they are other than an African bulb.....
Would that be about a 9 or 10?????????
Hope this helps in your decision..
Weezie