NW15. You bet. That's Courier! And as they say down in south Georgia: 'that's for a fact'. Courier is one of my all-time favorite LA's--that and Red Alert. I built my Courier stock to around 60 to 80 plants because people always ask for a 'start'. If you like it this year--you're going to love it next year!
Edit note added:
Cinta, Since your interested, Courier gets about 36 to 44 inches tall, has lush, dark green well populated foliage, has between 12 and 20 buds when mature and blooms fairly early for an LA type. it is very hardy and multiplies well. The flowers open as light lime green and fade to white cream about the third day in average summer weather. Heavy, thick petal substance. Blends well with other plants and colors. Here's some pics of buds and flowers and foliage so you get an idea.
The one in the upper right corner of the next picture (#2) is not Courier; only the one in the center is.