For the light spectra shown in Figure 1E (white light, WL; simulated shade, WL+FR), the R:FR ratio was calculated according to Whitelam and Franklin (2005) (R = 655-665 nm, FR = 725-735 nm) or Martinez-Garcia et al. (2014) (R = 640-670 nm, FR = 720-750 nm). The R and FR wavelength ranges taken into account for the calculations are indicated in t...