Germ granules are a complex collection of condensates rich in RNA and proteins that segregate to the primordial germ cells (PGCs). Since their initial characterization in insect embryos, germ granules have been hypothesised to deliver mRNAs of germ cell fate determinants to PGCs. In a new study in Caenorhabditis elegans, Geraldine Seydoux and colleagues find that many mRNAs enriched in germ granules are not involved in germline development. The authors conduct a single molecule fluorescence in situ hybridization screen of 487 mRNAs associated with the germ granule protein MEG-3. They confirm that MEG-3-bound mRNAs are enriched in P blastomeres that give rise to PGCs. However, most are degraded, and RNAi experiments suggest that only a minority inherited by the PGCs contribute to germ cell fate. In the granules, different mRNAs concentrate in spatially distinct clusters, similar to observations in Drosophila and zebrafish. However, this organization does not appear to be essential for RNA regulation, as transcripts are still properly translationally repressed, activated and degraded in meg-3 mutants lacking most clusters. The authors propose that the RNA clusters stabilize the protein-rich phases of germ granules for delivery to PGCs. These findings suggest that most mRNAs in germ granules serve a structural role, with only a minority of transcripts using the granules to enrich in PGCs.