Natural water purification in the swimming pond – it all depends on the plants!

Who wants to have something from his swimming pond for a long time, must pay attention to the water purification. You can find out how this works naturally here.

Swimming pond Algae Water purification
© Daniel Vincek –

Even if the summer in the United States often leaves a lot to be desired, there are still the hot days in July and August, on which one would like to beam oneself to the Mediterranean after work is done. Now, of course, this is only granted to very few people, so it is not surprising that more and more people are creating their own little water paradise. The basic requirement is, of course, that there is enough space in the garden or at the house for a pool or swimming pond.

The simplest way to create cool water is certainly the swimming pool, which is now available in umpteen designs. The advantage of this is that it is relatively quick to set up, but the disadvantage is that it only offers a limited volume. If this variant is not enough for you, you think bigger and flirt with a swimming pond. In the ideal case a gem for humans and animals is created – provided that the water in the pond remains clean in the long run.

Basics before building a swimming pond

Mark out the terrain, excavate the pit, provide the water supply – that’s it – unfortunately it’s not that easy after all. First, you need to think about what you want and how much subsequent work you want to put in.

General difference: swimming pond and natural pool

Those who do not explicitly deal with the subject will not see any difference between a swimming pond and a natural pool. The expert, however, does make a difference here, because even if the two variants are visually similar, the crux lies in the detail – more precisely in the water purification. The pool and pond water can “tilt”, should be known to everyone who has already dealt with the matter. Algae infestation is the result, caused by leaves, pollen and flowers. The natural pool requires some technology (pumps, filters) to purify the water, but a swimming pond does not require this technology at all. According to the experts at, plants in particular are responsible for water treatment. However, the water surface should still be vacuumed from time to time using a skimmer.

Biological water treatment in a swimming pond

The principle of water purification in a swimming pond is based on nature. After all, large lakes do not require technical filter systems. The main work is done by aquatic plants, bacteria, animal organisms (zooplankton) and their plant counterparts – phytoplankton.

Avoid mistakes in plant selection

Before you choose the appropriate plants for your swimming pond in the garden and pond centre, you should know the following:

Unlike a garden pond, a swimming pond is equipped with considerably fewer plants. It does not depend too much on the amount of leaves visible on the surface, but mainly on the underground parts of the plant – the roots and rhizomes. The roots of the plant transport the vital oxygen into the depths and thus ensure the biological balance.

Which plant species are optimal for your swimming pond?

Swimming pond Water lilies
© sonne_fleckl –

The selection of plants is therefore primarily limited to submerged aquatic plants, i.e. those specimens that are completely “submerged” under water. For this journeyman The most famous here is the water lily. However, you must make sure that the floating leaf plants do not take the light away from the subplants. In order to give the swimming pond its typical appearance, reed plants are also planted on the shore. More information about this plant species on

Plants for the swimming pond

After I have brought you closer to the meaning of the individual plant species, here are a few concrete suggestions and lots of fun with your new swimming pond.

underwater plants floating plants Reed plants (shore plants)
needlewort water hyacinth bulrush

water plague fern water vapour
hornwort clamflower rushes
spring moss water lily hedgehog flask
water spring water mimosa water east
frog cabbage water nut swamp iris

Don Burke

I am Don Burke, one of the authors at My Garden Guide.  I am a horticulturist that cultivates, grows, and cares for plants, ranging from shrubs and fruits to flowers. I do it in my own garden and in my nursery. I show you how to take care of your garden and how to perform garden landscaping in an easy way, step by step.I am originally from Sydney and I wrote in local magazines. Later on, I have decided, more than two decades ago, to create my own blog. My area of specialization is related to orchid care, succulent care, and the study of the substrate and the soil. Therefore, you will see many articles dedicated to these disciplines. I also provide advice about how to improve the landscape design of your garden.

Leave a Reply

Your email address will not be published. Required fields are marked *

Recent Posts

link to Pin Oak Tree

Pin Oak Tree

Pin Oak Tree (Quercus palustris) The pin oak tree (Quercus palustris) is a plant from the genus of oak trees in the family of the beech plants (Fagaceae). In temperate latitudes, it...