The secret to bringing droopy houseplants back to life? A dose of ultraviolet LED light can influence growth in roots and leaves

Alys Fowler at The Guardian reports at this time of year, all I can think about is light. My houseplants are similarly obsessed: a few of them are challenging each other to do the best Leaning Tower of Pisa impression. I can torture them no longer, so I’ve changed a few lightbulbs, added a few…