This set up a do-or-die clash with Bay of Plenty Blue, who were coached by Paul Tietjens, son of the great Sir Gordon Tietjens.
Northland left their surge until the last two minutes but they made them count, scoring two tries to give them a 20-14 victory and clinch a semifinal berth.
After vanquishing one Tietjens, they came up against the other. Sir Gordon's Samoan Barbarians were their opponents in the last-four clash.
The Samoan team had a sprinkling of international talent and that showed as they provided a master class in sevens play.
Northland were thoroughly outplayed as the Samoan Barbarians won the playoff match 29-0.
Waikato defeated the Samoan side 26-14 in the final.
Northland now head to the National tournament in Rotorua this weekend, but injuries to Bram Egli, Dan Wells and Issac O'Grady will be of concern to the coaching staff.