Plants use yellow light and blue light. Mix the two together and get green.

a pure green wavelength at 562 Nanometers should not effect growth.

The sun produces 58.3% yellow light
36.3% blue light
and 5.3% red light

Average them out and get almost green to are eyes but no green wavelenghts. Green is the balance or middle of the rainbow.

5.3% x 723.18(red nm) = 38.32
36.3% x 508.7(blue nm) = 184.6
58.3% x 616.0(yellow nm) = 359.1
.....................................______
.....................................582.114


582.1 Nm = 5153.6 K (3,000,000/Nm(582.1 in pure light spectrum)=K(5153.6))
Also the suns degree K

Hope this helps