The most popular houseplants in the UK, and how to look after them If booming indoor plants sales over the past year are anything to go by, the sector has risen in popularity as a result of increased isolation, social media-led design trends and, as many experts suggest, a new-found millennial desire to have something to nurture and care for. Google searches for ‘house plants’ increased by an astonishing 84 per cent between February and April last year, rising from 360,080 to 663,980 monthly searches, while Flower Card, an online card business specialising in floral design, reports ...