Hi lumsdale,
I've just recently (October) started growing a shop bought piece of ginger.
This web site is extremely helpful;-
http://www.muslimgrower.com/discussionforum/sh owthread.php?t=16
My plant is now over a foot tall, the leaves when crushed smell of ginger and I keep wanting to dig it up to see how it is doing.
According to the link, you are wise to keep it indoors if you live in the UK.
My user name there is randomgreenfingers, and I will soon post a picture of my plant, incidentally I'm not muslim but I don't think it matters.... Riz is soooo helpful. Check out the site, I love it.
Missy
xx