PlantDrainage.
The movement of excess water out of a growing medium and container.
What it means for your plants
Use open drainage holes and a suitable mix, then empty collected runoff. Holes alone do not prevent a dense or oversized root zone from staying wet. A gravel layer is not a replacement for drainage.
IN PRACTICE
A nursery pot can drain correctly but still sit in water if its decorative outer pot is not emptied.
Put it into practice
Learn when and how to water indoor plants, read potting-mix moisture, and avoid the most common watering mistakes.
How to water houseplants: check the roots, not the calendar