Water will slowly seep through the terracotta surface and the plant's roots will then grow towards and attach themselves to it to soak up only what they need.
These self-watering pots allow plants to care for themselves as their roots absorb water from the outer glass pot through the porous terracotta inner pot.
These monstera leaf-shaped moisture indicators use hydrochromic ink that changes from white to green when the soil is wet or back to white when dry.