Floating fern - care and wintering


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The swimming fern, also called common swimming fern, belongs to the water and shore plants, which are also suitable for a garden pond. Floating fern is under nature protection. The plant has no bottom roots, but floats freely on the surface of the garden pond.
Swimming farm is one year old and multiplies by means of spores and vegetative propagation.
How to recognize swimming ferns?

  • Floating fern has 5 to 15 cm long stems
  • the water or diving leaves are 3 to 5 cm long
  • the floating leaves are hairy and protected from water by a layer of wax
  • Floating fern floats because of the air chambers that form between the leaves and the hairs of the leaves
  • the water leaves have intercellular air chambers, which provide further buoyancy
  • Swimming fern floats on the surface of the water even in heavy waves
  • Floating fern is rootless
  • the growth is branched, swimming fern spreads carpet-like on the water surface
  • Floating fern leaves are found in an arrangement of threefold whorls
  • the third leaf is similar to a root optical and also has the functionality of such a root
Since the swimming fern has no roots, the water leaves are of particular importance. They take over the tasks of the roots. The floating leaves not only stabilize the fern in the water, they also provide food intake from the water. Nutrients from the water are absorbed by the thread-like hairy leaves. The stiff, waxy hair of the water leaves increase the variety of the surface of the leaf and thus facilitate the absorption of nutrients from the water. The larger the surface, the more nutrients can be absorbed.
The best locations for swimming fern
  • Floating fern thrives particularly well in old water and streams, which flow slowly
  • sunny and bright locations are best
  • partially shaded locations are possible, sunny locations are preferred by the swimming fern
  • Lime-rich and nutrient-rich water increases the growth of swimming fern
  • The swimming fern feels particularly well in shallow waters, because these warm the fastest in the spring
  • The planting site should be protected from the wind so that the heat needed is maintained as long as possible
Waters where duckweed or frog bite are found are great for planting floating ferns, as they need the same growth conditions
Fertilization and care of the swimming fern
Floating fern is very easy to care for when it grows in the right location. Although it needs lime-rich and nutrient-rich water, one should make sure that you do not overfertilize the water. Ideally, the swimming farm pulls its high demand for nutrients out of the pond water and cleans it along the way. The resulting growing and proliferating leaves form shadows on the pond surface, which restrains the algae growth. If one were to overfertilize the pond water, this would stimulate algae growth in such a way that the swimming fern could no longer suppress it. The water would over time be cloudy and overgrown with algae. The swimming fern would go down because it can not compete with too many algae.
Floating fern grows very fast and luxuriant in sunny locations. Too much growths should be avoided, so it is recommended to regularly thin out the swimming fern during the growing season. It should be noted that from the break points on the stems new plants are created. The vegetative propagation takes place during the entire growth period. Floating fern is particularly popular with pond owners because it has the ability to purify the water.
Wintering of swimming fern
The swimming fern is an annual plant and dies at the first autumn frosts. The swimming fern needs a lot of heat and light, so it is hardly possible to overwinter the swimming fern with much effort indoors. Even if you generate the heat needed for the swimming fern, overwintering usually fails due to lack of light. Attempts to overwinter the swimming fern in the local aquarium were successful only to a small extent. Mostly the plant survives for a while until it starts to rot and decays. It is very difficult to adjust the natural light and nutrient conditions of a pond in an aquarium. Due to the simple natural reproduction makes a costly hibernation of the swimming fern makes little sense. Especially because you have to spend a lot of energy to create the heat and light artificially, without which the swimming fern can not survive.
Propagation of the swimming fern
The swimming fern has small, spherical Sporenbehälter at the water sheet approach. These contain macro and microsporangia.Once these megaspores are fertilized, they dissolve from the mother plant and sink to the bottom of the water. In the mud, which is located at the bottom of the water, the fertilized spores can overwinter, without further help. After the frost, the spores, which are in the water mud, begin to germinate. They become larger after the germination phase and then rise, mostly in early summer, to the water surface.
Once the swimming fern has found a location that offers good growth conditions, every year a new generation of swimming ferns grows by itself. This then proliferates over a large area and forms a fern carpet on the water surface. If one reduces this by removing pieces from the fern rug, one stimulates the vegetative propagation. Floating fern can vegetate autonomously from the leaf-breaking ends and also from the very smallest plant and sprout pieces, independently. Floating fern replicates every year at the right location, by itself, until the water conditions change.
If you want to keep your swimming fern for a long time, you should ensure that:
  • the nutrient ratios of the water are stable
  • growing trees do not donate too much shade
  • no flowing waters are introduced
  • Algae do not overpower the swimming fern due to too much nutrient supply
  • Trees that shield the wind will not be felled
Worth knowing about swimming fern soonThe swimming fern is an annual aquatic plant that floats horizontally and rootless on the water surface. The leaves of the swimming fern are arranged in threefold whorls. They differ fundamentally in construction and function: The two upper are floating leaves. They have air chambers (intercellular) and thus provide buoyancy. On the epidermis sit numerous, crown-shaped plant hairs. These are coated with wax and will not get wet. When the leaves submerge, an air mantle is held between the stiff hair, which gives additional lift. The water-leaf is finely divided and appears thread-like and hairy. This gives it a large surface. The plant uses them to absorb nutrients from the water. Externally, the third leaf resembles a root and also fulfills its function.
  • The swimming fern is a rare plant. It occurs only in slow-flowing waters and old water.
  • The plant loves warmth and light and needs many nutrients. Lime rich water is preferred.
  • It is often found in so-called water lens companies.
  • The water must not be overfertilized, as the swimming fern can not compete against emerging algae masses.
The water level is not important for the settlement of swimming fern. The plant cleans the water, creates a lot of shade and extracts excess nutrients from the pond water. The leaf mass donates shade to algae-reducing plants.
  • The propagation of the fern is via megaspores. These are buoyant and overwinter in the mud bottom.
  • From mid-June new plants will germinate from them. The ascend to the water surface. They branch off copiously and form dense carpets.
  • The swimming fern can also be propagated vegetatively. Even the smallest pieces of sprout can produce new plants.

Video Board: Amazon Floating Fern 2.

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