Plant Water Calculator

Most houseplants in a medium pot want roughly 300–400 ml every four or five days. Pot size matters more than plant height.

Succulents store water in their leaves and rot easily in wet soil, so they need about a third of what a leafy plant uses.

Yes. Heat and longer daylight raise water use, so add roughly 20–30% in hot months and cut back in winter.

Terracotta breathes and dries faster than plastic or glazed ceramic, so terracotta pots usually need slightly more frequent watering.

Yellowing lower leaves, soggy soil and a musty smell are the classic signs. Let the soil dry before the next watering.