Summary:
- This study investigates the impact of light-emitting diode (LED) lighting spectra on the growth, physiological characteristics, and secondary metabolite accumulation of *Salvia miltiorrhiza* (Danshen) in a controlled environment.
- The researchers demonstrate that specific light treatments—particularly those incorporating blue and red wavelengths—significantly optimize the production of bioactive compounds (tanshinones and phenolic acids), providing critical data for the advancement of precision indoor agriculture and pharmaceutical crop cultivation.