Wakatu was released in 1988, derived from Hallertau breeding stock and originally marketed under the working name "Hallertau New Zealand" — a direct signal to brewers that it was intended as a noble-hop substitute grown domestically rather than a wholly new aromatic direction. It was later renamed Wakatu, after the Māori name for the Nelson region where much of New Zealand's hop growing is concentrated, once the variety had developed enough of its own identity to stand apart from its German namesake.
At 6.5-8.5% alpha acid, Wakatu carries a lime and tropical fruit twist that departs from true Hallertau's purely floral-herbal register, reflecting how much New Zealand growing conditions and selection pressure shifted its aromatic character from its noble-hop starting point. That citrus-lime lean makes it more genuinely dual-purpose in feel than a strict noble hop, even though its alpha acid sits in a similar practical range. Wakatu's moderate, dual-heritage alpha bridges its German ancestry and its later New Zealand development — the IBU calculator will confirm what that bridge actually delivers on a bittering charge.
Hallertau Mittelfrüh remains the direct historical comparison given the shared genetic starting point, while Motueka offers a New Zealand-grown alternative with its own lime character. New Zealand and German-inspired lager styles both use Wakatu. Its alpha range overlaps Motueka's closely but runs meaningfully above Riwaka's, why Motueka is generally the closer substitute for bittering as well as aroma.