Hooker and captain Gabriel Hakaraia scored two tries, as did athletic No8 Hamish Bennett.
Dominic Broadhead, Corbin Warren and Isaiah Hooper scored the other tries, with Hererangi Meihana adding four conversions.
Edwards singled out Warren and Hakaraia for being the best of the forwards, while Jesse Temp was solid in the backs and Meihana's first-second five combination with Ethan Robinson is looking promising.
The coach is hoping a few of his players will get a good look from the New Zealand Heartland Under 19 selectors in the next couple of weeks.
Wanganui play Poverty Bay this coming weekend, and then depending on other results, are likely to face Waiarapa Bush in the final.