Hey, "I'm in Oregon" encompasses a lot of different climates - are you on the coast near Portland? Up in the mountains/ski resorts near Bend? out in the desert? Over near the river? Pendleton? Please fill in your profile so your city/state appears in your posts. That will definitely help us to help you.
Up there in the Pac. NW your Rangoon Creeper definitely isn't getting enough sun. Any way you can give it a sunny window to sit in front of? What you've got to think about is where these plants naturally grow, and try to give it as much of the conditions of its "home" as you can. A grow light is fine, but natural light will make it SO much happier. You've had it for 2 years and it's only 4ft tall? It's surviving but not exactly thriving.
The fertilizer spikes are really only for outdoor use and wouldn't give a plant like that nearly enough goodies. They also concentrate all the plant food in a little area instead of letting it spread around and get to all the roots. You need to use a soluble fertilizer of some sort and give it some regularly, like every couple of weeks in summer and less often but still regularly in winter if you have it in a warm place with good light. Always water and fertilize it with warm water, too.
The flame vine is virtually a weed here, and yes, really gorgeous. But I wouldn't bother trying to grow it indoors unless you have a huge conservatory or a shopping mall. Rampant growth, and it only blooms for about a week once a year.
Can't you just plant the Chinese Wisteria outdoors there? (oh yeah, I forgot you might be up where it's too cold . . . ?? )
