Colored Shade Nets Affect Growth but Not Flowering of Four Greenhouse-grown Potted Ornamental Species

The color of horticultural shade nets is known to influence crop growth and quality because variations in the amount light. Four ornamental plant species (celosia, begonia, gerbera, fountain grass) were grown under aluminet, pearl, red plus black as control at 50% intensity for 8 weeks. Black had least transmittance (∼10% 30% ambient) within spectrum (620–750 nm), whereas greatest ∼70% 80%. Aluminet pearl resulted a similar reduction photosynthetic photon flux ∼50% 55% ∼55% 65% ambient, respectively. increased shoot dry weight begonia celosia, no differences among seen gerbera or grass. chlorophyll concentration was aluminet each except begonia. Shade net did not affect flower number.