Canterbury will host Auckland in the Farah Palmer Cup final, with both teams dispatching their semi-finals opponents.
Playing in her 99th appearance for Canterbury, veteran halfback Kendra Cocksedge inspired her team to a comfortable 31-3 victory over Wellington.
Leading just 5-3 at halftime, the hosts put on a clinic in the first 25 minutes of the second half, running in four tries, with an equally impressive effort on defence.
Steph Te Ohaere-Fox, Martha Mataele, Pip Love and Amy Du Plessis all dotted down, to go with Lucy Jenkins' sole try in the first half.
After recently announcing her intention to retire from rugby after the World Cup this year, Cocksedge is pleased to extend her Canterbury career for another week.
"I was coming into the week and I didn't want to think too much about it," Cocksedge told Sky Sport. "After the announcement in the week I just wanted to come out and enjoy it.
"Halftime, the score was pretty close, but we knew with the wind behind us in the second half, we could put a lot of pressure on them and I'm glad we did, because we've earnt another week and that's exciting."
Meanwhile, Auckland left it late to defeat reigning champions Waikato 26-21 to book their spot in the final against Canterbury.
Trailing by two points with just 12 minutes to go, Katelynn Vaha'akolo and Patricia Maliepo both crossed for tries to clinch the win.
Auckland held a handy 12-3 lead at the break, Waikato fought back with a couple of Renee Holmes penalties and a Carla Hohepa try, but they couldn't hold off a surging Storm, despite a consolation try to Esther Tilo-Faiaoga right on fulltime.
Canterbury 31 (Jenkins, Ohaere-Fox, Mataele, Love, du Plessis tries; Cocksedge 2 conversions, Rosie Kelly conversion) Wellington 3 (Newton penalty)
Auckland 26 (Viliko, Hufunga, Vaha'akolo, Maliepo tries; Demant conversion, Fisher 2 conversions) Waikato 21 (Hohepa, Tilo-Faiaoga tries; Holmes conversion & 3 penalties)
