overwintering murraya koenigii
I am looking for help! Last year, I bought a murraya koenigii in the summer, and it did very well. Then winter came. I know it can't stay out all winter. It's tropical, and this is Seattle. I put it in a sunny window -- but this IS Seattle, so not so sunny in winter. We don't heat our house when we are sleeping, and the temps regularly get down to 50, and occasionally lower. Now that Spring has rolled around, my murraya koenigii looks like two green sticks. I haven't tossed it, because I'm still hoping.
However, I have ordered a new one, which will be here in May. I want to grow this into a little tree, so that I'll have curry leaf to cook with. Does anyone have an idea what I can to help overwinter my plant?
Thanks in advance!