potted houseplants stand near the window. purple lighting for growth of flowers

window flowers chlorophyll growth photosynthesis phytolamps apartment blossoming bulb chloroplast conservatory crop electric electrical energy flat florescence green greenhouse heliophilous home hothouse houseplants illumination indoor lamps leaf led lighting lightrequiring luciphile magenta phengophil photophilous plants pot potted purple room seedlings shine sill spectrum sprout studio sun violet warmhouse night interior stand window flowers