Seed Coat The protective outer covering of a seed; Plumeria seeds have a thin coat that facilitates quick germination. Synonyms: TestaRelated Articles: Glossary: Seed ScarificationPlumeria seeds may not need scarification, unlike seeds with harder coats.Glossary: Seed Coat ColorThe seed coat color can provide clues to the Plumeria seed's maturity and health.Glossary: Seed AnatomyUnderstanding seed anatomy is crucial for cultivating Plumeria from seed.