Duckweed: medicinal properties and application in traditional medicine

Duckweed: medicinal properties and application in traditional medicine

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Lemna (Latin Lemna) can be called as duckweed small, frog sackcloth, duck grass. Belongs to the Aroid family, a genus of flowering monocotyledonous plants. There is speculation that duckweed carpet clogs water, but this is not the case. Thanks to the production of oxygen, the plant enriches the surrounding space with it.

Where it grows and what duckweed looks like

This grass is found in any standing water bodies, especially with a variety of organic living creatures that provide duckweed with food. Thin sheet plates float on the surface of the water. The roots departing from them, acting as a keel, are under water. Depending on the type of duckweed, the leaf has a different shape and size. At its base, a small inflorescence may appear.

In the autumn, when the temperature drops to +6 degrees, the grass prepares for the formation of future sprouts, forming special buds. Then it sinks to the bottom, where it remains until spring.

The plant is very unpretentious and is characterized by rapid growth, especially in polluted water. It can tolerate very low temperatures and difficult climatic conditions, but prefers a temperate and tropical climate.

Common types of duckweed

There are many species of this flowering plant, but they all float freely in the water column or on its surface. Good lighting contributes to the formation of a vast accumulation - rafting, as if carpet covering the surface of the water. The so-called light filter cleans the pond, enriching it with oxygen and protecting it from flowering.

A change in leaf shade signals the presence of contaminants.

Tropical duckweed

L. aequinoctialis. The only species that belongs to annual plants. The length of the sheet plates is greater than the width. It is characterized by fairly frequent flowering. Prefers to settle in stagnant bodies of water, completely covering their surface.

Photo gallery

Small duckweed (marsh)

L. minor. A perennial plant has green leaves floating in the water of small sizes (up to 15 mm). Rarely appearing flowers are also very tiny. Appears only in fresh water (small lakes, ponds, swamps).

Three-sided duckweed

Lemna trisulca. It occurs in the still waters of the temperate climatic zone.. It is located in the water column, forming deep openwork thickets, rising only during flowering. Among thin light green leaves, aquarium fish prefer to dwell.

Common Rhizome (duckweed)

L. polurhiza (Spirodela rolurhyza). Not one, but a bunch of filiform reddish or white roots departs from each plate. Small leaves with a violet back have a round shape in diameter up to 6 mm.

How to collect, dry and store duckweed

As therapeutic purposes, all parts of the plant are harvested, and only ecologically clean places are chosen for this. The harvesting process is carried out in the summer using a net. Then the raw materials must be spread out in a thin layer on a fabric in a place protected from the sun, and periodically mixed. Drying is allowed in a well-ventilated area.. After drying, the grass crumbles easily.

For storage of raw materials, carefully sealed containers should be used, for example, glass jars, which should be located in a place protected from sunlight. The expiration date of dry grass is 1 year.

How to prepare duckweed

Medicinal properties and chemical composition of duckweed

Grass is rich in chemical composition, namely:

  • trace elements;
  • proteins;
  • fats;
  • fiber;
  • flavonoids;
  • triterpene compounds.

The amount of protein contained is compared to bean leaves, and its nutritional properties are not inferior to cultivated cereals. The amount of amino acids (arginine, lysine) even exceeds their content in corn.

The effect of elements on the body has an astringent, antipyretic, diuretic and antispasmodic effect. Means, which include duckweed as a basis, are used as cold remedies, restorative, hemostatic, anthelmintic and choleretic drugs.

In medicine, water infusions are actively used to treat diseases, such as:

  • scurvy;
  • allergy;
  • hives;
  • erysipelas;
  • ulcers and boils;
  • conjunctivitis;
  • pathology of the respiratory tract;
  • joint diseases;
  • hemorrhoids.

Due to the ability to cope with skin diseases, the dermatologists are in great demand with an aqueous product.

Scope of duckweed

The unique plant is used in several directions:

  1. In homeopathy.
  2. In agriculture (food supplement for animals and birds).
  3. As a component in the manufacture of drugs used to enhance immune forces and in dermatology.

The plant is used for the production of decoctions, alcohol or water infusions. Actively used in home therapy.

Duckweed in traditional medicine

People from ancient times use algae for economic and medicinal purposes, and quite widely. Noticed that the plant has a positive effect in the fight against malignant tumors, allergic reactions, diseases of internal organs, purulent wounds and other ailments.


For external use, decoctions are prepared with which poorly healing wounds, purulent formations are washed, and also used for diseases of the respiratory tract.

For self-preparation of a decoction, you need to take 1 tbsp. spoon of dry product and pour a glass of water. Then bring to a boil and remove from heat. After an hour, filter the solution. Dishes should be enameled. It should be consumed in half a glass before meals 4 times a day. Children are allowed to use the decoction only from the age of 1 year. The dose for the child is 1 tbsp. spoon 3 times a day.

How to collect duckweed

Alcohol tincture

The agent, prepared on an alcohol-based basis, is used in the treatment of tonsillitis, and is also used as pain medication. External use eliminates skin itching and swelling.

To prepare the tincture, 1 teaspoon of fresh raw materials should be poured with a glass of vodka or 40% alcohol. It is advisable to use a container of dark glass. After 7 to 8 days, the composition must be filtered and drink 20 drops, mixed in a quarter glass 3 times a day.

Duckweed infusion with honey

Honey infusion is used to combat vitiligo and other skin ailments. Grind the duckweed and squeeze the juice with gauze and combine with honey in equal proportions. Take the medicine should be 1 teaspoon three times a day. For storage, the infusion should be placed in a place with a low temperature.

Honey balls with duckweed

Dried raw materials must be ground to a powder state and combined with honey. Then roll up pea-sized balls. In order to keep the balls in shape, it is better to use candied honey. From 1 to 3 pieces should be taken per day. Despite the fact that the treatment with a honey product is very long, it leads to positive results. It is necessary to use the medicine for people suffering from anemia, prostatitis, as well as for the prevention of colds. Experts recommend eating peas in winter and spring.

Contraindications and harm duckweed

The plant belongs to non-toxic means, so people tolerate it well and get a lasting effect. Means based on duckweed are contraindicated in case of individual intolerance to the components included in its composition, as well as in patients with nervous disorders, otherwise there may be causeless irritability, serious nervous breakdown or tantrum. Patients with vegetative dystonia are also recommended to abandon the use of duckweed.

When using the tool, it is important to ensure that you do not overdose, and also do not use it very often. In this case, sleep disturbance, increased irritability and irritability are possible. It is necessary to stop the use of drugs.

Duckweed for strengthening immunity

Water greens are an excellent treat for fish, waterfowl and birds. The plant can be added during cooking: soups, seasonings, salads. It should be put in soup 3 to 5 minutes before being ready, along with other herbs. Dry seasoning is also suitable for seasoning. Experts recommend including duckweed in the menu for exhaustion, impaired carbohydrate metabolism and a breakdown.

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