A drainage hole in the flower pot is necessary for the well-being of the plants. There are usually drainage holes in the pots, but there are also some that do not have a drainage so that they can be placed in different locations. Such pots definitely need drainage.

Drainage hole and drainage in the flower pot
The drainage hole in the flower pot is necessary so that excess water or rainwater can drain away. If the water accumulates in the pot, waterlogging occurs, which leads to root rot.
Flower pots and tubs in the garden should always have a drain, as they sometimes have to cope with heavy rainfall.
Drainage makes sense in flower pots and tubs, since too much water can drain off here, but a certain amount of residual moisture remains in the pot and the plant can help itself on dry days. A drainage usually consists of expanded clay, (19.73€) gravel or broken pottery, which is covered with a piece of fleece so that it cannot mix with potting soil.
Pots and planters without a hole
Indoor plants can do without a drainage hole in the pot if there is a generous drainage layer. If watered moderately, the drainage can absorb the water well and slowly release it to the plant. If you want to be on the safe side, you can always see how much water is left in the pot with an integrated watering system (€32.95).
Build a water reservoir
A pot with a water reservoir can easily be made from a plant pot without a hole.
- Draw an auxiliary line with a pencil around 5 cm from the bottom of the pot (the height of the line varies depending on the pot size).
- Put the pot on its side.
- Have a second person hold on to keep the pot from rolling away.
- Clamp a thin drill in the drill.(97.00€)
- Carefully drill several holes on the line you have drawn.
- Then re-drill with a stronger drill.
Now fill a drainage layer in the pot, the upper limit is the row of holes. Now you can insert a plant and water it with enough water until it comes out of the holes. You now have a water reservoir from which the plant can supply itself with water for several days.