The theory is your plants will perk up if you reflect some extra light their way over the long winter months Most houseplants are hungry for sunlight, which is in short supply during a UK winter. Plants on a shelf or coffee table often get insufficient light, so they stretch, lean and thin out. ...
Source: [Guardian International](https://www.theguardian.com/lifeandstyle/2026/sep/22/houseplant-hacks-can-mirrors-foil-boost-sunlight)