A complete team performance from the Kiwi girls saw them dominate the first half, although converting opportunities proved difficult.
Goalkeeper Georgia Barnett made several critical saves from German shots before a stunning goal to the near post from Michaela Curtis gave New Zealand the advantage.
Led by stand-out players Brooke Neal and Rhiannon Dennison, the Junior Black Sticks continued to build pressure while Germany became frustrated and struggled to get through the defence.
Just two minutes into the second half, the Junior Black Sticks pulled further ahead when Erin Goad converted from a penalty corner.
Two goals down, Germany desperately attempted to mount a comeback with play on the turf becoming a lot less one-sided.
German captain Rebecca Grote scored 10 minutes into the half to pull her side right back into the game, but New Zealand held strong and denied the host nation any further opportunities.
The Junior Black Sticks finish their tournament 9th overall, playing a lot better than their final placing might suggest with four wins, one draw and one loss.