Root Anchor The function of roots to secure the plant in the ground; Plumeria roots provide stability to support the top-heavy growth of flowers. Synonyms: Root SupportRelated Articles: Glossary: Phase III – Growth & StructureThe phase for stronger vegetative growth and branch structure.Phase II — EstablishmentB2 – Early Growth Establishment (Field Book)F4 – Bloom Readiness (Field Book)R2 – Bloom Cycles vs Plant Readiness (Field Book)