Plants that don’t like a lot of moisture will need a drainage hole for moisture to escape and for airflow to circulate through the pot. Another important function of drainage holes is to allow water to flush the soil of excess salts from fertilizers.
Regarding this, should you put rocks in the bottom of a planter?
In general, it’s not necessary to put rocks in the bottom of plant pots. One rock to cover the drainage hole is enough – just enough so that the soil doesn’t leach out of the bottom but water can flow freely through the pot. Putting rocks in plant pots doesn’t aid drainage or improve air circulation.
People also ask, why do plant pots have holes?
A hole at the bottom of the container is critical.
It allows water in the soil to drain freely so adequate air is available for the roots. While various kinds of plants have differing drainage needs, few can tolerate sitting in stagnate water.
Why do they sell plant pots without drainage holes?
Plant pots without drainage holes are known as cachepots, and they are commonly used to aesthetically hide grow pots that hold houseplants. Planting directly into decorative containers increases the risk of overwatering.