Houseplant hacks: does putting gravel at the bottom of pots improve drainage? (opens in new tab)

Generations of gardeners have added stones to their pots before topping up with compost, but does it really help?The problem Most old houseplant guides suggest adding a layer of gravel or stones to the bottom of the pot before adding compost. It is presented as basic good practice; the thing you do to stop soil from retaining water, which can cause root rot.The hack This layer of gravel is said to improve drainage by providing a place for excess water to collect below the root zone, keeping r...