Drainage in plants - this is how it works


Not only buildings and land need a drainage - but also plants in pots and in the garden. Why this is so, what damage threatens in too high humidity, and how to properly apply drainage, read in this post.

Waterlogging in plants

If water in the soil can not drain away, one speaks of so-called waterlogging. Waterlogging is a big problem for plants. Most plants do not tolerate them well, throw off their leaves and die. For this reason, waterlogging must be avoided at all costs and excess water must be discharged from the soil.

Waterlogging in flower pots

In a flowerpot it can very easily come to waterlogging. In order to provide the plants with sufficient protection, the moisture and excess water should be able to drain off. This is particularly important in all rock garden plants but also in Mediterranean plants - they need a particularly effective drainage.

Drainage can be made by drilling holes in the flower pots. Several small holes work better than a single big one. Then you should set up the plant pot a bit raised, such as on bricks, so that the water can drain.

In order to make it possible to drain the water well inside the pot, there should be a layer of pebbles or vermiculite underneath the soil. The height of the layer should normally be around 10% of the pot height. The water flows off particularly well if you add additional grit to the substrate. For sensitive plants this is a good solution for effective drainage.

Waterlogging in the garden

The soil in the garden can also be a threat to waterlogging, especially if it is not particularly permeable to water and permeable. Recognizable this is:

  • often foul smell in the garden
  • standing puddles and
  • swampy spots.

In severe cases you will have to drain your garden. As a simple measure at a lower load, it is sufficient to raise the beds so that the water can drain off. If the lawn is affected, a so-called surface drainage is usually inevitable.

Tips & Tricks

Always allow drainage to be planned by the specialist and do not carry it out by eye and on your own!


Video Board: Drainage in Potted Plants | From the Ground Up