Sodium-ion batteries (SIBs) have garnered significant attention as a promising alternative to lithium-ion batteries (LIBs) owing to their lower cost and abundant availability of natural resources. Hard carbon (HC) is broadly recognized as the most favorable anode material for SIBs because of its superior Na-storage capabilities and economic viability. However, significant challenges persist, such as the limited electrical conductivity, poor cycling stability, and low initial Coulombic efficiency (ICE). In this work, utilizing Indian trumpet flower seeds (ITSs) as a precursor, we successfully developed an innovative HC anode, which delivers a high reversible capacity of 380 mAh g