This paper examines the status of plural allomorphy in Pennsylvania Dutch (PD), a Germanic language spoken predominantly in the US. The main objectives in this field research were to test i) the productivity of plural alternations, and ii) whether certain Germanic features have been retained in this language. Regarding the latter, the aim was to determine to what extent a prosodic tendency for a word-final trochee -- which plays a dominant role in shaping the form of nominal plurals in Standard German, except for the plural exponent {-s} -- plays a role in PD. In this study, a Wug test and a well-formedness judgment task were used with sectarian PD-speakers in Lancaster County, PA, to test whether all eight attested plural exponents in PD are productive, and which role the trochee might play in PD plural formation. Preliminary findings suggest i) that PD speakers of this variety use eight allomorph exponents productively, and ii) that PD speakers appear to adhere less to a trochaic template in plural formation as compared to Standard German. In particular, many non-trochaic forms that were rated highly show vowel alternations on the noun stem. Based on this finding, the authors argue that PD allows plural forms to eschew the trochaic requirement found in Standard German in specific environments, namely in particular in zero plurals and stem vowel alternations. Variety-specific findings such as these have implications for the role of prosody in plural formation in related Germanic languages.